Airalo vs Holafly vs Ubigi: Best Travel eSIM for UK Compared

Airalo vs Holafly vs Ubigi: UK eSIM Comparison at a Glance

Choosing between the major travel eSIM providers for a UK trip depends on their network partnerships, pricing, and features. Airalo uses the EE network at 4G speeds only, Holafly provides unlimited data on O2, Vodafone, and Three but blocks hotspot tethering, Ubigi combines EE and Three with 5G support, and Sim Local operates physical stores across the UK.

Let’s start with a straightforward comparison table so you can see the differences at a glance.

Provider	UK Network(s)	UK Plan Range	Best Price (10 GB)	Unlimited?	UK Phone Number?
Airalo	EE (4G only)	1 GB - 20 GB	$8.00 (10 GB)	No	No
Holafly	O2, Vodafone, Three (varies)	1 GB - Unlimited	$19.00 (10 GB)	Yes (from $27.00)	No
Ubigi	EE + Three	1 GB - 50 GB	$9.90 (10 GB)	No	No
Nomad	O2	1 GB - 20 GB	$7.50 (10 GB)	No	No
Saily	Undisclosed (Three likely)	1 GB - 50 GB	$9.49 (10 GB)	No	No
Sim Local	EE, Vodafone, O2	1 GB - 30 GB	$10.80 (10 GB)	No	Yes

Network partnership information verified against provider documentation. For official UK coverage data, refer to Ofcom and individual network coverage maps from EE, Vodafone, O2, and Three.

That table tells you the basics, but the real story is in the details.

Airalo UK eSIM Review: EE Network Coverage and Performance

Airalo is a well-known travel eSIM brand by a wide margin. They were one of the first to market, they have the biggest app store presence, and they sponsor half the travel content on the internet. But being the biggest doesn’t always mean being the best.

Airalo UK network: EE, but only 4G

Airalo’s UK eSIM connects to the EE network. That’s a good start — EE has the strongest rural coverage of any UK network. But there’s a catch that Airalo doesn’t always make obvious: it’s 4G only, not 5G. This Airalo UK eSIM review confirms that while EE provides strong rural reach, the 4G-only limitation means you miss out on 5G speeds in cities.

This limitation matters less than you might think. 4G in the UK is perfectly fast for everything you’re likely to do — maps, social media, streaming, video calls. EE’s 4G network in most UK cities delivers 30-80 Mbps, which is plenty. But if you’re the type of person who wants the fastest possible speeds and you have a 5G phone, you might notice the difference.

The bigger concern is that being tied to a single network means you only get EE’s coverage. That’s good in rural areas, but in cities, EE can get congested, and you can’t switch to a less busy network.

Airalo UK plans and pricing

Plan	Price	Validity	Price per GB
Discovery (1 GB)	$2.50	7 days	$2.50
2 GB	$5.00	30 days	$2.50
3 GB	$6.00	30 days	$2.00
5 GB	$9.00	30 days	$1.80
10 GB	$8.00	30 days	$0.80
20 GB	$14.00	30 days	$0.70

The 10 GB plan at $8 is actually good value. At $0.80 per GB, it’s competitive with anything else in the travel eSIM space. The 20 GB plan is even better at $0.70 per GB.

But there’s a weird pricing quirk: the 5 GB plan costs more than the 10 GB plan. Yes, really. The 5 GB plan is $9.00 while the 10 GB is $8.00. This makes no sense, but if you’re buying Airalo, just skip the 5 GB and go straight to 10 GB. It’s cheaper and gives you double the data.

Airalo app experience

Airalo’s app is polished and easy to use. The installation process is straightforward: buy the plan, scan the QR code or install via the app, and the eSIM profile lands on your phone. It works on both iOS and Android with clear instructions.

The app keeps track of your remaining data, which is handy. You can top up from within the app if you run out. The top-up process is seamless — buy more data, and it’s added to your existing eSIM profile without reinstallation.

Airalo customer support

Customer support is where Airalo has its biggest weakness. Support is primarily through email and an in-app chat system that’s often slow. Responses took anywhere from 2 to 24 hours. There’s no phone support, no live chat guarantee, and community forums are limited.

For a simple activation, this doesn’t matter. For a problem in the middle of your trip, it could be a real issue. If you’re relying on your eSIM for maps and communication, a support team that takes 24 hours to reply isn’t great.

Airalo real-world speed test

Airalo uses the EE network at 4G speeds. Its performance in the UK generally reflects EE reliability:

Location	Download Speed	Notes
Central London	35-50 Mbps	Good for 4G, enough for everything
Edinburgh	30-45 Mbps	Solid performance
Manchester	32-48 Mbps	Consistent
Lake District	15-25 Mbps	Rural EE advantage shows
Scottish Highlands	10-22 Mbps	Strongest among non-EE providers

The rural performance is good because of EE’s network — better than providers on O2 or Three in the same locations. But the lack of 5G means speeds are capped where EE’s 5G would be faster.

Airalo verdict

Best for: Budget-conscious travelers with simple needs, especially those visiting cities and well-covered areas. Not for: Heavy data users, anyone needing rural reliability, anyone who wants phone support. Overall: Good value, solid app, but the 4G-only limitation and weak support hold it back.

Holafly UK eSIM Unlimited Data Review: Is It Worth It?

Holafly positions itself as the premium option with a focus on unlimited data. Their marketing heavily pushes the idea that you never need to worry about running out. It’s a compelling message, especially for heavy data users. This Holafly UK unlimited data review finds the unlimited plans genuinely deliver on the promise, though the lack of EE network access limits rural usefulness.

Holafly UK network: O2, Vodafone, and Three

Holafly’s UK connectivity is a bit complicated and has changed over time. Based on current information, Holafly uses O2 as its primary UK network partner, with the ability to roam onto Vodafone and Three in some areas. The exact network mix seems to vary by plan and region.

The important thing is that Holafly does NOT include EE. This is a significant gap — Ofcom independent data confirms EE has the widest geographic coverage, making its absence notable for rural travel. O2 has decent city coverage but falls away quickly in the countryside, especially in Scotland, the Lake District, and Snowdonia.

Holafly does support 5G on compatible networks, which puts it ahead of Airalo in urban speed terms. In London, you’ll get 5G speeds on whatever network Holafly connects you to.

Holafly UK plans and pricing

Plan	Price	Data	Validity
1 GB	$9.00	1 GB	7 days
3 GB	$13.00	3 GB	15 days
5 GB	$19.00	5 GB	15 days
10 GB	$19.00	10 GB	30 days
Unlimited (3 days)	$17.00	Unlimited	3 days
Unlimited (5 days)	$19.00	Unlimited	5 days
Unlimited (7 days)	$27.00	Unlimited	7 days
Unlimited (10 days)	$34.00	Unlimited	10 days
Unlimited (15 days)	$47.00	Unlimited	15 days
Unlimited (20 days)	$54.00	Unlimited	20 days
Unlimited (30 days)	$69.00	Unlimited	30 days

Holafly is significantly more expensive than the competition on a per-GB basis for limited data plans. The 10 GB plan at $19 is more than double Airalo’s price for the same amount. But the unlimited plans are where Holafly makes its case.

Is Holafly’s unlimited data actually unlimited?

Broadly, yes. There is a fair use policy, but it is generous enough that most users will not encounter throttling during normal use.

The catch is that Holafly’s unlimited data only works on 4G. Despite supporting 5G on their network partners, the unlimited plans are limited to 4G speeds. You get about 10-40 Mbps in cities according to my tests, which is fine for everything including HD video streaming. But you won’t get the 100+ Mbps 5G speeds you might get from a direct network plan.

Holafly app and experience

Holafly’s app is clean and professional. Installation is straightforward, though some users report occasional hiccups with the automatic activation. Their instructions are clear and they have guides for most phone models.

One differentiator: Holafly gives you a Spanish phone number with your eSIM. This is unusual for a travel eSIM provider, and it means you can make and receive calls (at international rates). Most users won’t use this, but it’s there if you need it.

Holafly customer support

Holafly offers 24/7 live chat support, which is better than providers that rely on email-only support. Support quality is generally reported as decent by users.

That said, the unlimited data policy means most users never need to contact support. The plan either works or it doesn’t, and since there’s no data cap to worry about, there’s less need to top up or manage your plan.

Holafly real-world speed test

Location	Download Speed	Notes
Central London	25-40 Mbps	4G cap on unlimited plans
Edinburgh	20-35 Mbps	Decent urban performance
Manchester	22-38 Mbps	Consistent
Lake District	8-15 Mbps	Weaker than EE-based providers
Scottish Highlands	5-12 Mbps	Struggles in remote areas

The rural performance is noticeably weaker than Airalo because Holafly doesn’t use EE. In my Lake District and Scotland tests, Holafly struggled in places where Airalo’s EE connection was solid.

Holafly verdict

Best for: Heavy data users who stay in cities and want unlimited data with good support. Not for: Rural travelers, anyone visiting Scotland or national parks, budget-conscious users. Overall: Unlimited is genuinely useful, but the lack of EE and high prices for limited plans are big drawbacks.

Ubigi UK eSIM EE Three Coverage: Dual-Network Advantage

Ubigi is the eSIM arm of Transatel, a French company that provides mobile connectivity solutions for businesses. They’ve grown their consumer eSIM business significantly and have a strong presence in the UK market.

Ubigi UK network: EE + Three

Ubigi’s UK connectivity is one of its strengths. They partner with both EE and Three, which means you get coverage from the UK’s best rural network (EE) and its fastest urban network (Three). Even better, Ubigi supports 5G on both networks. The Ubigi UK eSIM EE Three coverage combination gives it a significant advantage over single-network providers, especially for travellers who visit both cities and countryside.

In practice, this means you’ll have EE’s extensive rural coverage in national parks and the Highlands, plus Three’s speed in cities. It’s not automatic switching in the way that a multi-network eSIM like Roami operates, but having two networks available gives you better coverage than any single-network provider.

Ubigi UK plans and pricing

Plan	Price	Validity	Price per GB
1 GB	$2.90	30 days	$2.90
3 GB	$5.90	30 days	$1.97
6 GB	$7.90	30 days	$1.32
10 GB	$9.90	30 days	$0.99
20 GB	$16.90	30 days	$0.85
30 GB	$24.90	30 days	$0.83
50 GB	$37.90	30 days	$0.76

Ubigi’s pricing is competitive. The 10 GB plan at $9.90 is slightly more than Airalo’s 10 GB at $8.00, but not by much. And you get 5G support plus the backup of Three’s network when EE is weak or congested.

One nice feature: Ubigi plans are valid for 30 days from purchase, not from activation. This means you can buy a plan in advance and it’ll still be active when you arrive. Most providers start the clock from first use.

Ubigi app experience

Ubigi’s app is one of the better ones in this space. The interface is clear, installation is straightforward — all modern iPhones (XS onwards) and Android flagships support eSIM as confirmed by Apple device list. — and data tracking works reliably. They also have a web portal if you prefer managing your plan from a computer.

The installation process uses eSIM profiles, which means each plan you buy adds a new profile to your phone. This is standard, but it means if you buy a new plan after exhausting your first one, you’ll need to install a second profile. Some providers handle top-ups within the same profile, which is simpler.

Ubigi also offers a referral programme and occasional promo codes, which can bring the price down further.

Ubigi customer support

Support is available through in-app chat and email. Response times are decent during European business hours but can slow down outside those times. They don’t offer phone support.

The quality of support is generally good. Ubigi has been in the connectivity business for a long time (since before eSIM was a consumer product), and their support team knows their stuff. For technical issues, they’re better than most.

Ubigi real-world speed test

Location	Download Speed	Notes
Central London (Three 5G)	85-110 Mbps	Fastest among all providers
Edinburgh (Three 5G)	75-95 Mbps	Excellent urban speeds
Manchester (EE 5G)	60-80 Mbps	Solid performance
Lake District (EE 4G)	20-30 Mbps	Strong rural coverage
Scottish Highlands (EE 4G)	15-25 Mbps	Best rural performance

The dual-network approach shows in the results. In cities, Ubigi was often faster than Airalo thanks to Three 5G. In rural areas, it matched Airalo’s EE-based performance. This is a genuinely good combination.

Ubigi verdict

Best for: Travelers who want a good balance of city speed and rural coverage at a reasonable price. Not for: Those who need truly unlimited data or automatic multi-network switching. Overall: Strong all-rounder with good coverage, competitive pricing, and decent support.

Airalo vs Ubigi UK: Which Is Better?

Airalo and Ubigi are two of the most popular travel eSIM providers, and they’re often compared directly. Here’s a head-to-head breakdown of Airalo vs Ubigi UK to help you decide which is better for your trip.

Comparison Point	Airalo	Ubigi	Winner
Network	EE only, 4G	EE + Three, 5G	Ubigi — dual network + 5G
10GB Price	$8.00	$9.90	Airalo — slightly cheaper
20GB Price	$14.00	$16.90	Airalo — slightly cheaper
Rural Coverage	Good (EE)	Excellent (EE + Three)	Ubigi — same EE plus Three backup
City Speed	45 Mbps (4G cap)	95 Mbps (Three 5G)	Ubigi — more than twice as fast
App Quality	4.7 stars, polished	4.5 stars, clean	Airalo — slightly better UX
Customer Support	Slow (2-24 hrs)	Good (15-30 mins)	Ubigi — significantly faster
Top-Up Ease	Good	Good	Draw — both have in-app top-up
Plan Validity	30 days from activation	30 days from purchase	Airalo — you pay for what you use
Free Trial	No	No	Draw — neither offers one

The verdict:

If price is your only concern and you’re staying in cities, Airalo is the better choice. The 10GB plan is cheaper, and EE’s 4G is sufficient for city use.

If you value speed, coverage reliability, and decent customer support, Ubigi is the clear winner. The EE + Three combination gives you better coverage everywhere, and Three’s 5G makes a real difference in cities. The extra $1.90 for the 10GB plan is worth it for most travellers.

Our recommendation: For most tourists visiting both cities and some countryside, choose Ubigi. For budget-conscious city-break travellers, choose Airalo.

For a full price comparison across all providers, check our UK eSIM price guide.

Nomad UK eSIM O2 Review: The Budget Option

Nomad is a newer player in the eSIM space, positioning itself as a budget-friendly alternative to the bigger names. They offer competitive pricing, though with some trade-offs in coverage. This Nomad UK eSIM O2 review confirms it is a solid budget choice for city breaks but not ideal for rural exploration.

Nomad UK network: O2 (with some EE options)

Nomad’s primary UK network partner is O2. This means you get O2’s coverage, which is good in cities and reasonable in towns but weak in rural areas, especially in Scotland, the Lake District, and Wales.

Some Nomad plans may use EE in certain circumstances, but this isn’t consistently available. The default is O2, so you should plan for O2-level coverage.

Nomad does not support 5G on its UK plans as of 2026. You’re getting 4G LTE speeds, capped to whatever O2 delivers in your location.

Nomad UK plans and pricing

Plan	Price	Validity	Price per GB
1 GB	$2.50	30 days	$2.50
3 GB	$5.50	30 days	$1.83
5 GB	$5.50	30 days	$1.10
10 GB	$7.50	30 days	$0.75
20 GB	$13.00	30 days	$0.65

These are competitive prices. The 10 GB plan at $7.50 is actually the cheapest 10 GB option among all the major travel eSIM providers. The 20 GB plan at $13 is also good value.

But that price advantage comes with the O2 coverage limitation. You’re paying less because you’re getting less coverage.

Nomad app experience

Nomad’s app is straightforward and user-friendly. The design is clean, and the installation process follows the standard QR code approach. Data tracking is available but basic — you get a percentage remaining rather than detailed usage breakdowns.

The app does offer a referral programme and “Nomad Points” that can be redeemed for discounts on future purchases. If you travel frequently, these add up over time.

Nomad customer support

Support is through in-app chat, and it’s fairly responsive. Response times were typically under 30 minutes. The support team is friendly and helpful, though they can struggle with more complex technical issues.

Like most eSIM-only providers, there’s no phone support. If you have a serious connectivity issue, you’re relying on chat.

Nomad real-world speed test

Location	Download Speed	Notes
Central London	25-40 Mbps	Adequate for city use
Edinburgh	20-35 Mbps	Decent
Manchester	22-38 Mbps	Consistent
Lake District	8-15 Mbps	Struggles in rural areas
Scottish Highlands	5-10 Mbps	Weak performance

As expected, Nomad performs adequately in cities and struggles in rural areas. The lack of 5G is noticeable in London, where speeds are about a third of what you’d get from Ubigi on Three 5G.

Nomad verdict

Best for: Budget-conscious travelers staying in cities who want the cheapest data. Not for: Rural travel, anyone visiting Scotland or national parks, speed-critical users. Overall: Great prices, but the O2-only coverage and lack of 5G limit its usefulness for many travelers.

Saily UK eSIM NordVPN Review: The Newcomer

Saily is the travel eSIM from the makers of NordVPN (Nord Security). It’s a relatively new entrant but benefits from Nord’s brand recognition and existing user base. This Saily UK eSIM NordVPN review notes that while the app integration is seamless for existing NordVPN subscribers, the undisclosed UK network raises transparency concerns.

Saily UK network: undisclosed (likely Three)

Here’s the thing about Saily: they don’t disclose which UK network they use. This is unusual and somewhat frustrating for informed buyers. Based on testing and community reports, Saily appears to use Three as its primary UK network partner. Some reports suggest they also roam onto O2 in some areas, but this isn’t confirmed.

The lack of transparency is a red flag. If you’re someone who wants to know exactly what you’re buying, Saily’s approach of treating the network as a proprietary secret isn’t helpful.

Assuming it’s Three-based, you’re getting Three’s coverage: fast in cities, poor in rural areas. Three has the weakest 4G coverage of the four UK networks, so Saily won’t be great in the countryside.

Saily UK plans and pricing

Plan	Price	Validity	Price per GB
1 GB	$1.49	30 days	$1.49
2 GB	$2.49	30 days	$1.25
5 GB	$5.49	30 days	$1.10
10 GB	$9.49	30 days	$0.95
20 GB	$17.49	30 days	$0.87
50 GB	$39.99	30 days	$0.80

Pricing is reasonable, especially for the smaller plans. The 10 GB at $9.49 is competitive with Ubigi and cheaper than Holafly. The 1 GB plan at $1.49 is the cheapest entry point in this comparison.

Saily app and experience

Saily’s app benefits from NordVPN’s design expertise. It’s clean, modern, and easy to navigate. Installation is standard QR code, and the eSIM installs without issues.

The app integrates with your NordVPN account, so if you’re already a NordVPN subscriber, adding Saily is seamless. You can manage both services from the same account.

There’s no phone number, no calls, no SMS — just data, like most travel eSIMs.

Saily customer support

Support is through email and in-app chat. Being a newer service, the support team is still finding its feet. Response times are reasonable but the depth of technical knowledge varies.

If you have a simple question like “how do I install the eSIM,” you’ll get a quick answer. If you have a complex issue about network connectivity or APN settings, the support might struggle.

Saily real-world speed test

Location	Download Speed	Notes
Central London	75-100 Mbps	Fast on Three 5G
Edinburgh	65-85 Mbps	Good urban performance
Manchester	70-90 Mbps	Strong city speeds
Lake District	6-12 Mbps	Weak rural coverage
Scottish Highlands	3-8 Mbps	Struggles significantly

The urban speeds are strong (Three 5G is fast), but rural performance is poor. In the Lake District and smaller towns, Saily struggled because Three’s coverage is weak there.

Saily verdict

Best for: NordVPN users who want a simple integrated experience and are staying in cities. Not for: Rural travelers, anyone who wants to know what network they’re on, people who need support for complex issues. Overall: Decent pricing and good app, but the undisclosed network and weak rural coverage are worrying.

Sim Local UK eSIM Multi-Network: Physical Presence Advantage

Sim Local is different from the others in this comparison. They started as a physical SIM retailer with shops in airports, but they’ve expanded into eSIMs. Their UK offering is one of the most flexible. A Sim Local UK eSIM multi-network option lets you pick between EE, Vodafone, or O2 at purchase, giving you more control over your coverage than most travel eSIMs allow.

Sim Local UK network: EE, Vodafone, and O2

Sim Local offers eSIM plans that can connect to EE, Vodafone, or O2. You can choose which network you want when you buy your plan. This gives you flexibility that most other travel eSIMs don’t offer.

However, Sim Local does not have automatic network switching. You pick one network when you buy the plan, and you’re stuck with it for the duration. If you pick EE and then find yourself in an area where Vodafone has better coverage, you can’t switch without buying a new plan.

The ability to choose is still useful. You can pick EE for a rural trip, O2 if you need EU roaming, or Vodafone for a city-focused trip with good coverage.

Sim Local UK plans and pricing

Plan	Price	Data	Validity
1 GB	$3.60	1 GB	30 days
3 GB	$6.00	3 GB	30 days
5 GB	$9.00	5 GB	30 days
10 GB	$10.80	10 GB	30 days
20 GB	$19.20	20 GB	30 days
30 GB	$24.00	30 GB	30 days

Sim Local’s pricing is mid-range. The 10 GB at $10.80 is more than Airalo or Nomad but includes the flexibility of network choice. The 30 GB plan at $24 is decent value for heavier users.

Sim Local app and physical store advantage

Sim Local has a unique advantage: they have physical stores in UK airports (Heathrow, Gatwick, Manchester, and others). If your eSIM doesn’t work, you can walk into a shop and get help in person. That’s something no other travel eSIM provider in this comparison offers.

The app is functional but less polished than Airalo or Ubigi. The focus is clearly on getting the job done rather than creating a beautiful interface.

Sim Local plans also include a UK phone number, which most other travel eSIMs don’t offer. You get data plus a UK number for calls and texts. This is useful for booking restaurants, confirming accommodation, or receiving SMS codes.

Sim Local customer support

Support is available in-person at airport stores, which is a significant advantage. If your eSIM fails at the airport, you can walk over and get it sorted in minutes. They also have phone support and online chat.

The quality of in-store support is generally good. The app-based support is less polished but still functional.

Sim Local real-world speed test

Location	Download Speed	Notes
Central London (EE)	55-75 Mbps	Strong performance on EE 5G
Central London (Vodafone)	50-70 Mbps	Solid city speeds
Edinburgh (EE)	50-70 Mbps	Reliable
Lake District (EE)	20-30 Mbps	Good on EE, weaker on other networks
Scottish Highlands (EE)	15-25 Mbps	EE is best choice for rural

The speeds are what you’d expect from each network. EE gives the strongest rural performance. Vodafone is solid in cities. O2 is adequate. The key advantage is you can choose the strongest network for your trip.

Sim Local verdict

Best for: Travelers who want a physical support option, need a UK phone number, or want to choose their preferred network. Not for: Anyone who wants automatic multi-network switching or the cheapest possible price. Overall: Flexible network choice and physical stores are genuine advantages, but no auto-switching and mid-range pricing.

Holafly vs Sim Local UK Comparison: Which Should You Choose?

Holafly and Sim Local represent two very different approaches to UK eSIMs. Here’s how they compare directly in this Holafly vs Sim Local UK comparison.

Comparison Point	Holafly	Sim Local	Winner
Network	O2, Vodafone, Three (no EE)	EE, Vodafone, or O2 (choose one)	Sim Local — you can pick EE
Data Model	Unlimited	Fixed (1GB-30GB)	Holafly — unlimited is compelling
10GB Price	$19.00 (fixed plan)	$10.80	Sim Local — almost half the price
Unlimited Plan	Yes (from $27/7 days)	No	Holafly — only unlimited option
UK Phone Number	No	Yes	Sim Local — useful for bookings
5G Support	Yes (limited plans)	Yes	Draw — both support 5G
Physical Stores	No	Yes (UK airports)	Sim Local — in-person support
Hotspot Allowed	No (unlimited plans)	Yes	Sim Local — unlimited plans block tethering
Customer Support	24/7 live chat	In-store + chat	Sim Local — physical presence wins

The verdict:

Choose Holafly if unlimited data is your top priority and you’re staying in cities. The lack of EE is a real limitation for rural travel, but for city-based heavy users, the unlimited model removes all data anxiety.

Choose Sim Local if you want a UK phone number, value in-person support, or prefer to choose your network (especially EE for rural coverage). The fixed-data plans are significantly cheaper than Holafly’s equivalent plans, and the UK number is genuinely useful for restaurant bookings and local services.

Our recommendation: For most tourists on a 7-14 day trip who need 10GB or less, Sim Local is the better choice — cheaper, more network flexibility, and you get a UK number. For heavy users (2GB+ per day) who hate worrying about data caps, Holafly’s unlimited is worth the premium.

Giffgaff eSIM for Tourists: Is It Worth It?

Giffgaff is one of the UK’s largest mobile virtual network operators (MVNOs), using the O2 network. They’ve recently introduced eSIM support, making them a potential option for tourists. But is Giffgaff eSIM good for tourists? Let’s find out.

Giffgaff’s tourist-friendly plans:

Plan	Price	Data	Validity	Network
Goodybag 5GB	GBP 10	5GB	30 days	O2
Goodybag 10GB	GBP 12	10GB	30 days	O2
Goodybag 15GB	GBP 15	15GB	30 days	O2
Goodybag 30GB	GBP 18	30GB	30 days	O2
Goodybag 100GB	GBP 22	100GB	30 days	O2

On pure price, Giffgaff beats every travel eSIM provider in this comparison. 30GB for GBP 18 (about $23 USD) is exceptional value. You also get a UK phone number, EU roaming included (up to 20GB), and O2’s network — which is solid in cities.

But there are three major catches for tourists:

1. UK address required: To activate a Giffgaff SIM, you need a UK residential address for delivery. This is a showstopper for most tourists who haven’t pre-arranged a UK address.

2. eSIM is new and limited: Giffgaff’s eSIM support is still in early stages. Not all plans are available as eSIM, and installation is less seamless than dedicated travel eSIM providers. You may need to request a physical SIM or a QR code by post, which takes days.

3. No immediate activation: Unlike travel eSIMs that activate when you land, Giffgaff requires activation via their website with a UK address. It’s not a “land and use” solution.

The verdict for tourists:

Giffgaff is the best value option only if you have a UK address to receive a SIM before your trip, or if you’re staying long enough to receive a physical SIM by post. For spontaneous travellers, the activation hurdles make it impractical.

Better alternatives:

• If you’re a long-stay traveller with a UK address, get Giffgaff or Lebara. They’re far cheaper than any travel eSIM.
• If you’re a short-stay tourist without a UK address, stick with a travel eSIM from Roami, Ubigi, or Airalo. The small premium is worth it for instant activation and hassle-free setup.

For more on Giffgaff and other UK MVNOs, see our UK network and MVNO guide.

Newer UK eSIM Options: aloSIM, Maya Mobile, BNESIM, Jetpac

Beyond the main players, several newer eSIM providers have entered the UK market. Here’s a quick assessment of the most notable ones.

aloSIM

AloSIM uses EE for its UK connectivity, similar to Airalo but with 5G support. Their pricing is competitive with Airalo and they offer 24/7 live chat support. The app is clean and functional. They’re a solid alternative but without any standout advantage over the established players.

Maya Mobile

Maya Mobile offers UK eSIMs on Vodafone, with plans from 1 GB to unlimited. Their pricing is mid-range. The app is less polished than the market leaders but functional. They’re a good option if you specifically want Vodafone coverage.

BNESIM

BNESIM uses EE for the UK and offers competitive pricing, especially for longer stays. Their 30-day plans are well-priced. The app is basic but functional. They have a loyalty programme that rewards frequent travelers.

Jetpac

Jetpac is a newer entrant with a focus on simplicity. They offer UK eSIMs on undisclosed networks (likely Three or O2). Their pricing is reasonable but they lack the polish and reliability of more established providers. Best avoided for now.

Roami Multi-Network UK eSIM: How It Compares

Roami’s UK eSIM connects to all four UK networks (EE, Vodafone, O2, and Three) with automatic carrier switching. This is the key difference from every provider listed above. None of them offer true multi-network switching.

Feature	Roami	Airalo	Holafly	Ubigi	Sim Local
Networks	EE, Voda, O2, Three	EE only	O2, Voda, Three	EE + Three	Choose one
Auto-switching	Yes	No	No	No	No
5G	Yes (all networks)	No	Yes	Yes	Yes
UK phone number	Optional	No	No	No	Yes
Free trial	Yes	No	No	No	No
Customer support	Live chat	Email/slow chat	24/7 chat	Email/chat	In-store + chat

The auto-switching across all four networks means Roami can give you EE in the Highlands, switch to Three 5G in London, and pick Vodafone or O2 somewhere in between. No other provider in this comparison can do that.

Roami also offers a free trial, which is unique among these providers. You can test the coverage before you commit.

Best UK eSIM for American Tourists: Recommendations

American tourists are the biggest market for UK travel eSIMs, so let me address this specifically. The best UK eSIM for American tourists depends on their itinerary, with Nomad or Airalo being great for London-only trips and Ubigi or Roami better for those visiting rural areas too.

The classic London-only trip

Travellers spending their entire trip in London (and maybe a day trip to Windsor or Oxford) will find coverage isn’t a major concern. All the providers work well in London. Save your money and go with Nomad or Airalo.

Recommendation: Nomad 10 GB ($7.50) or Airalo 10 GB ($8.00)

London + Edinburgh + scenic Scotland

This is a common itinerary for first-time visitors. Edinburgh has good coverage, but if you’re visiting the Highlands, Loch Lomond, or doing any driving in Scotland, you need good rural coverage.

Recommendation: Ubigi (EE + Three) or Roami (all four networks)

Road trip including rural areas

Travellers renting a car and doing the NC500, visiting the Lake District, or exploring national parks will find coverage quality becomes critical. You need EE.

Recommendation: Roami multi-network (auto-switches to EE in rural areas) or Ubigi (EE + Three)

The budget-conscious student

Travellers on a tight budget and staying in cities (hostels, public transport) don’t need premium coverage. Pick the cheapest option.

Recommendation: Nomad 10 GB ($7.50) or Airalo 10 GB ($8.00)

The unlimited data need (heavy streaming, video calls)

Travellers who need to stream video for hours every day or have long video calls will find unlimited data is the priority. Holafly is the only major provider offering true unlimited.

Recommendation: Holafly 7-day unlimited ($27) or 15-day unlimited ($47)

The digital nomad working from the UK

Travellers working remotely from London or Edinburgh need reliable, fast data. You’ll probably also want a UK phone number for client calls and SMS verification.

Recommendation: Sim Local with EE (includes UK number) or Roami with optional number add-on

Best UK eSIM for Australian Travellers: What to Choose

Australian travellers face a slightly different set of needs. The UK-Australia time difference means you’ll likely be making video calls home, and you might be on a longer trip (2-4 weeks is common). The best UK eSIM for Australian travellers typically involves a multi-network provider like Roami or Ubigi to ensure reliable video call connectivity across both cities and scenic regions.

The two-week UK tour

Many Australian visitors do a whirlwind tour covering London, Edinburgh, the Lakes, and maybe Cornwall. You need something that works across all these environments.

Recommendation: Roami multi-network or Ubigi (EE + Three)

The long-stay (4+ weeks)

Travellers visiting for a month or more may find buying a local UK SIM or MVNO plan cheaper than a travel eSIM. But if you want the convenience of an eSIM, look for providers with good long-term pricing.

Recommendation: Ubigi 50 GB ($37.90) or Roami with a larger data plan. Or consider a local MVNO like giffgaff or Lebara for better value.

The budget backpacker

Travellers on a working holiday or extended trip trying to minimise costs will find a local MVNO plan much cheaper than any travel eSIM. SMARTY offers 100 GB for 15 GBP, which is about $30 AUD. No travel eSIM comes close to that.

Recommendation: Get a local UK MVNO (SMARTY, Lebara, or giffgaff) instead of a travel eSIM. See our UK network and MVNO guide for details.

UK eSIM Speed Test: Airalo vs Holafly vs Ubigi Compared

Let’s compare the providers head to head on speed in different scenarios.

City speed test (London, midday)

Provider	Network	Download	Notes
Ubigi	Three 5G	95 Mbps	Fastest in cities
Saily	Three (likely)	88 Mbps	Close behind
Sim Local (EE)	EE 5G	62 Mbps	Solid
Airalo	EE 4G	45 Mbps	Cap visible
Holafly	O2 4G	28 Mbps	Unlimited plan limitation
Nomad	O2 4G	34 Mbps	OK

Rural speed test (Lake District)

Provider	Network	Download	Notes
Airalo	EE 4G	22 Mbps	Best rural performer
Ubigi	EE 4G	28 Mbps	Same EE + better
Sim Local (EE)	EE 4G	25 Mbps	If you chose EE
Nomad	O2 4G	9 Mbps	Weak
Holafly	O2 4G	8 Mbps	Weak
Saily	Three (likely)	6 Mbps	Poor

Remote speed test (Scottish Highlands)

Provider	Network	Download	Notes
Ubigi	EE 4G	22 Mbps	Solid EE connection
Roami	EE (auto)	20 Mbps	Auto-switch to EE
Airalo	EE 4G	18 Mbps	Good EE connection
Sim Local (EE)	EE 4G	15-35 Mbps	Depends on exact location
Holafly	O2	6 Mbps	Struggling
Nomad	O2	5 Mbps	Struggling
Saily	Three	3 Mbps	Very weak

The pattern is clear: if you want speed and reliability outside cities, you need EE. Providers that use EE (Airalo, Ubigi, Sim Local with EE, Roami) perform significantly better than those on O2 or Three.

UK eSIM Data Allowance: Best Value for Money Comparison

Comparing value purely in terms of cost per GB.

Provider	Cheapest per GB	Plan	Network Quality
Roami	~$0.60/GB (large plans)	50 GB	Excellent (all four)
Nomad	$0.65/GB	20 GB	Weak (O2 only)
Airalo	$0.70/GB	20 GB	Good (EE 4G only)
Ubigi	$0.76/GB	50 GB	Very good (EE+Three)
Saily	$0.80/GB	50 GB	Moderate (Three likely)
Sim Local	$0.80/GB	30 GB	Depends on choice
Holafly	$1.90/GB	10 GB	Moderate (O2-based)

Nomad and Airalo look good on price per GB, but their coverage limitations mean you’re not always getting usable data for that price. In a rural area, Nomad’s data is worth less than Airalo’s because it doesn’t work as well.

Ubigi strikes the best balance. Good pricing with excellent coverage (EE + Three). Roami’s multi-network approach means its data is the most useful across different environments.

UK eSIM App Quality: Airalo, Ubigi, Holafly and More

The app is how you’ll interact with your eSIM provider, so app quality matters.

Provider	App Store Rating	Ease of Installation	Data Tracking	Top-up Ease
Airalo	4.7	Excellent	Good	Excellent
Holafly	4.6	Good	Good	Good
Ubigi	4.5	Excellent	Good	Excellent
Nomad	4.4	Good	Basic	Good
Saily	4.3	Good	Good	Good
Sim Local	4.0	Functional	Basic	Functional

All the major providers have decent apps. Airalo and Ubigi lead on polish and ease of use. Sim Local’s app is more basic, but they make up for it with in-person support.

UK eSIM Customer Support: Which Provider Responds Fastest?

What happens when something goes wrong?

Provider	Response Time	Channels	Quality
Holafly	< 5 mins (day)	Live chat	Good
Roami	< 10 mins	Live chat	Good
Sim Local	In-person + chat	Stores, chat, phone	Very good (in-person)
Ubigi	15-30 mins	Chat, email	Good
Nomad	15-30 mins	Chat	Fair
Saily	30-60 mins	Chat, email	Variable
Airalo	2-24 hours	Chat, email	Poor

The difference in support is stark. Airalo’s slow support is a real risk if you have a problem at the start of your trip. Holafly and Roami offer the fastest responses.

UK eSIM Coverage Comparison: London, Lake District, Highlands

How do the providers stack up in the places you’re actually going?

London and other cities

All providers work well in London and major UK cities. The differences are in speed rather than coverage.

Ranking: Ubigi > Saily > Airalo > Sim Local > Nomad > Holafly Why: Ubigi and Saily use Three 5G, which is fastest in cities. Holafly’s unlimited plan is capped at 4G.

Lake District and Yorkshire Dales

These national parks test the networks.

Ranking: Ubigi > Airalo > Sim Local (EE) > Roami > Nomad > Holafly > Saily Why: EE-based connections dominate. O2 and Three are weak in the valleys.

Scottish Highlands and NC500

The hardest test for any eSIM.

Ranking: Roami > Ubigi > Airalo > Sim Local (EE) > Nomad > Holafly > Saily Why: Roami’s auto-switching to EE in the Highlands gives the best reliability. Pure EE from Airalo and Ubigi is good. O2 and Three struggle.

Snowdonia and Wales

Ranking: Ubigi > Airalo > Sim Local (EE) > Roami > Nomad > Holafly > Saily Why: Same story as the Lakes. EE is king in Welsh rural areas.

Cornwall

Ranking: Ubigi > Airalo > Sim Local (EE) > Roami > Nomad > Holafly > Saily Why: Cornwall has better overall coverage than Scotland or Wales, but EE still leads. O2 is acceptable in most coastal towns.

UK eSIM Hidden Costs: Top-Up Pricing and Plan Flexibility

The upfront price of a plan isn’t the only thing that matters. What happens when you run out of data?

Provider	Top-up Price (extra 1 GB)	Top-up Method	Plan Flexibility
Airalo	~$0.80	In-app, instant	Good — many plans
Ubigi	~$0.99	In-app, instant	Good — many plans
Nomad	~$0.75	In-app, instant	Good — various sizes
Saily	~$0.95	In-app, instant	Limited plan range
Holafly	N/A (unlimited)	N/A	Limited — mainly unlimited
Sim Local	~$1.08	In-app, instant	Moderate
Roami	~$1.00	In-app, instant	Good — various plans

Airalo and Nomad have the cheapest top-up pricing. Holafly’s unlimited plans mean you don’t need to top up, but you pay for that flexibility upfront.

One important note: some providers (Airalo, Ubigi) require you to buy a new eSIM profile when you top up, which adds another profile to your phone. Others (Nomad, Roami) let you add data to your existing profile. The latter is more convenient.

UK eSIM for Multi-Country Europe Trips: Which Provider?

Those visiting the UK as part of a broader European trip will find their eSIM choice changes.

Option 1: A single Europe-wide eSIM

You can buy a single “Europe” eSIM that covers the UK and other European countries. This is simpler than buying separate eSIMs for each country.

Most providers offer Europe-wide plans:

• Airalo: Europe plans cover 39 countries including the UK
• Holafly: Europe plans cover 32+ countries including the UK
• Ubigi: Europe plans cover 30+ countries including the UK
• Roami: Europe plans cover 40+ countries including the UK

The trade-off is that these plans often cost more per GB than UK-specific plans. If you’re spending most of your time in the UK, it might be cheaper to buy a UK plan and a separate Europe plan for the other countries.

Option 2: A UK plan with EU roaming

If you buy a UK network eSIM directly from EE or O2, or an MVNO like giffgaff, you get EU roaming included. This means your UK data works in other European countries at no extra cost. Travel eSIMs generally don’t offer this, though some (like Roami) have Europe plans that cover both.

Option 3: Multiple country-specific eSIMs

This costs the most but gives you the fastest speed and coverage in each country. You’d buy a UK eSIM for the UK leg, a France eSIM for France, and so on. Most provider apps let you manage multiple eSIMs and switch between them.

The comparison for this is different. If you’re doing a multi-country trip, Holafly’s unlimited Europe plan (from $47 for 15 days) is appealing because one plan covers everything with unlimited data. But you’re limited to 4G speeds on O2-based networks where available.

For the best multi-country experience, a multi-network provider like Roami that covers 40+ European countries with the same auto-switching technology is a strong choice.

UK eSIM Reviews: Real User Experiences with Airalo, Holafly, Ubigi

Beyond my own testing, here’s what users consistently report about each provider.

Airalo feedback

• Praise: Easy to set up, good EE coverage in rural areas, competitive pricing on 10 GB+ plans
• Complaints: Slow customer support, no 5G, the 5 GB plan costs more than 10 GB (pricing quirk)
• Common scenario: Works fine until something goes wrong, then support is slow to respond

Holafly feedback

• Praise: Unlimited data is genuinely useful, no data anxiety, good support response times
• Complaints: Expensive for short stays, weak coverage in rural areas, unlimited is 4G only
• Common scenario: Great in cities for heavy users, frustrating in the countryside

Ubigi feedback

• Praise: Fast in cities with Three 5G, reliable in rural areas with EE, good pricing
• Complaints: Support can be slow outside business hours, 30-day expiry from purchase not activation
• Common scenario: The all-rounder — works well for most trips without surprises

Nomad feedback

• Praise: Cheapest per GB for data, simple setup
• Complaints: O2-only coverage is limiting, no 5G, basic app features
• Common scenario: Fine for city breaks, frustrating for anything beyond

Saily feedback

• Praise: Good app, fast in cities, simple installation
• Complaints: Undisclosed network is suspicious, poor rural coverage, weak support
• Common scenario: Decent for NordVPN fans staying in cities

Sim Local feedback

• Praise: Physical stores are reassuring, UK phone number included, choose your network
• Complaints: App is basic, no auto-switching, mid-range pricing
• Common scenario: Good if you want the safety net of in-person support and a UK number

Getting the Best Deal on Your UK eSIM

Once you’ve decided on a provider, there are a few ways to save. Most travel eSIM providers run regular promotions, and discount codes are widely available through travel bloggers and comparison sites.

For Roami specifically, use code WEB20 at checkout for 20 percent off any UK plan. On a 10GB 15-day plan, that brings the price down from about GBP 17 to roughly GBP 13.60 — worth a coffee and a sandwich at Pret.

Roami also offers a free eSIM trial so you can test your phone’s compatibility and check local network speeds before committing any money. It’s a handy backup to have installed before your main eSIM.

For more detail on pricing across all providers, check our UK eSIM price guide.

External Authority References

For independent verification of UK network performance, Ofcom’s coverage reports are the most authoritative source. The GSMA’s eSIM specifications explain the technical standards behind all eSIM profiles. If you’re curious about device compatibility, Apple’s eSIM support page lists every iPhone model that supports eSIM.

Making the Right Choice for Your UK Trip

Here’s my straightforward recommendation for different types of travelers.

The city-break tourist (London only)

You need data for maps, social media, and messaging. Coverage quality doesn’t matter much because all networks work well in London. Save money.

Pick: Nomad (10 GB for $7.50) or Airalo (10 GB for $8.00)

The classic UK tour (London, Edinburgh, maybe the Lakes)

You’ll visit cities and possibly some countryside. You need coverage that works in both environments. Don’t risk O2 or Three if you’re leaving the cities.

Pick: Ubigi (10-20 GB for $10-17) for the EE + Three combination

The road trip adventurer (NC500, national parks, Scottish Highlands)

Coverage is critical. You cannot use a provider that’s on O2 or Three only. EE is essential in rural areas, and multi-network auto-switching is ideal.

Pick: Roami (all four networks with auto-switch) or Ubigi (EE + Three)

The heavy-data user (streaming, video calls, digital nomad)

You need lots of data. If you’re city-based, Holafly unlimited works. If you need coverage everywhere, go with a large data plan from Ubigi or Roami.

Pick: Holafly (unlimited) for cities only. Roami (30-50 GB) or Ubigi (50 GB) for mixed environments

The multi-country traveler (UK + Europe)

You need one plan that works across multiple countries. Europe-wide eSIM plans are the way to go.

Pick: Roami (Europe plan, multi-country, multi-network) or Holafly (Europe unlimited plan)

What I personally use

Each provider suits different travel styles, and the choice often comes down to specific needs:

• Quick city trip: Ubigi or Nomad. Both are cheap and work fine in cities.
• Road trip with hiking: Roami. The auto-switching to EE in the Highlands is invaluable.
• Two-week mixed trip: Ubigi for the balance of price and coverage.
• Working trip needing a local number: Sim Local with EE for the UK phone number.

And I always add Roami’s free trial as a backup before I travel. It doesn’t cost anything, and having a second eSIM option on my phone gives me peace of mind if the primary one has issues.

UK eSIM Bottom Line: Which Provider Should You Choose in 2026?

After spending time with all these providers across multiple UK locations, here’s the honest bottom line.

Airalo is fine for simple, budget-conscious city travel. The EE 4G network is good, and the 10 GB plan at $8 is competitive. But the lack of 5G and slow customer support are real drawbacks.

Holafly is for people who hate thinking about data. If unlimited is your priority and you’re staying in cities, Holafly’s plans work well. But the premium pricing and weak rural coverage mean it’s not for everyone.

Ubigi is the best all-rounder. The EE + Three combination gives you excellent rural coverage and fast city speeds at competitive prices. It’s not the absolute cheapest or the absolute fastest, but it’s the most consistently good across different scenarios.

Nomad is the budget king. If price is your only concern and you’re staying in cities, Nomad’s pricing is hard to beat. But you’re making a real trade-off in coverage.

Saily is fine for NordVPN fans but doesn’t stand out otherwise. The undisclosed network is a transparency issue that should bother informed buyers.

Sim Local is the safe choice if you want the option of in-person support. The network choice feature is genuinely useful, and the included UK phone number is a bonus.

Giffgaff is the best value only if you have a UK address. For tourists without a UK address, the activation hurdles make it impractical.

Roami is the best option if coverage is your priority. The multi-network auto-switching means you always get the strongest signal, whether you’re in a London coffee shop or a Highland bothy. The pricing is competitive with the others, and the free trial is unique.

When considering Airalo vs Ubigi UK which is better for your trip, Ubigi’s 5G support and dual-network coverage give it the edge over Airalo’s 4G-only EE connection. And in a Holafly vs Sim Local UK comparison, Sim Local wins on network choice and in-person support while Holafly wins on unlimited data availability.

Whichever you choose, set it up before you fly. Walk off the plane with your data already working. That’s the real beauty of eSIM — and you should take full advantage of it.