The best eSIM for UK tourists allows for swift 4G and 5G coverage to stay connected. Best of all, you can purchase and activate your plan before you get there. In 2026, we tested over 15 eSIM providers in the United Kingdom. However, only five made the cut as affordable, fast, and reliable providers for everyone’s budget.
For the best eSIM for the UK list, we also considered unlimited data, ease of use, and 24/7 customer support that you can rely on. Our top picks start at a few dollars per month, and on some, you can even get additional discounts. Here are our five best eSIM providers for the UK, with their features, prices, pros, and cons.
Best eSIM for UK: Five Best Picks Ranked
Best eSIM for UK: Detailed Reviews for 2026
We got our five sorted out, so it’s time to review them in more detail. If you’re interested in visiting other countries after the UK, these five are great eSIMs for international travel, so you’ll surely find plans for other locations. If you’re dead set on the UK, then these five have all the delicacies your soul seeks:
1. Ubigi (Best Plan: Unlimited Data for 7 Days for $22)
Pros
- Reliable 5G coverage
- Affordable UK eSIM plans
- Smooth QR code activation
- Support 24/7 via live chat
- No limit on data sharing
Ubigi is the best eSIM for the UK. It’s reliable, fast, and has 5G coverage in the entire UK, due to its cooperation with EE and H3G, leading UK telecom operators. We love Ubigi because it doesn’t cost much, and is still miles ahead of its rivals. The best seller is its unlimited data plan for seven days at $22.
However, you can get the same plan for $44 for 30 days. Limited data options are diverse, and you can get 24 GB annually (2 GB per month), 25 GB for 30 days, and even 10 GB for a week at only $9. Ubigi’s activation is via the QR code, which it provides when you purchase a plan. After that, it’s smooth sailing.
Its app even allows unlimited data sharing, and even lets you top up your data if you run out. We loved Ubigi’s customer support available 24/7. It responds immediately and helps you if you’re stuck during activation or you face connection issues. As the best eSIM for the UK, it doesn’t have specific shortcomings. It’s also one of the best eSIM providers for Asia by the way.
We’d only mention the lack of SMS or voice calls due to the lack of a phone number. A good compensation is the 10% discount on your first purchase with the promo code GIZMODO on checkout. Click below to start and claim the special offer.
2. Saily (Best Plan: 10 GB of Data for 30 Days for $18.99)
Pros
- Robust security features
- Diverse internet data plans
- 30-day activation period
- Reliable customer service
Cons
- Slightly higher price
- Rare connection issues
Saily comes from Nord Security, the team behind NordVPN, one of the best VPNs. In the same fashion, Saily is the best eSIM for UK travelers looking for security and privacy, thanks to its ad blocker and a virtual location. The Ultra plan, which Saily is proud of, even includes NordVPN and NordLocker at $59.99 per month.
If you need a basic eSIM for the UK, then the best plan to pick is 10 GB for 30 days for $18.99. Unlimited data starts at $34.99 for ten days and goes up to $71.99 for 30 days. You can notice that Saily is pricier than Ubigi. However, it’s worth the extra, as it also has good 4G and 5G coverage with exemplary speeds.
Saily allows unlimited data sharing and provides a 30-day activation period. You can buy it before you arrive in the UK and activate it when you’re there. Activation is simple, and Saily does everything through its intuitive app. Even customer support is facilitated through the app, making things much simpler.
Saily lacks a UK phone number, as well, and may not be as fast and reliable as Ubigi, but that’s really a minor difference we noticed in our tests.
3. Holafly (Best Plan: Unlimited Data for a Day for $3.90)
Pros
- Cheap daily unlimited data
- Speedy 5G connections
- Beginner-friendly app
- Easy eSIM activation
Cons
- Limited tethering (500 MB/day)
- Expensive longer plans
Holafly is a perfect eSIM for UK traveling for unlimited data, unrelenting speeds, and full 4G and 5G coverage. It’s as fast as Ubigi, and works with more telecoms to amplify its coverage, including H3G, VirginMediaO2, Vodafone, T-Mobile, and Orange. Testing Holafly was joyful, and our experience was top-notch.
Streaming, gaming, and casual browsing are no match for it. Another plus is its low price of only $3.90 per day of unlimited data. A week is about $27.30, while 30 days cost $74.90. It’s not the cheapest pick, and that’s evident, particularly because its data sharing is limited to only 500 MB per day for some reason.
Other than that, Holafly has all you need in the best eSIM for the UK. Speed, reliability, 24/7 customer support, and beginner-friendly apps. Best of all, unlimited data is on all plans, and you can never complain that you run out of it. There’s no way to purchase less than limitless data, making Holafly feel luxurious.
4. Airalo (Best Plan: Unlimited Data for 5 Days for $17)
Pros
- Stable connections
- Cheap short-term plans
- Limitless data sharing
Cons
- No SMS or voice calling
- Only 4G coverage
Airalo is a good eSIM for Europe and the UK, with both regional and UK-only plans. If you’re staying only in the UK, pick that one to enjoy unlimited data and reliable 4G coverage. While we’re at it, Airalo supports only 4G from EE in the UK. It’s not very fast, but after testing, we’ll say it’s stable and reliable enough.
The good thing about Airalo is its low price. 1 GB of data for three days is only $4, while 50 GB for the same period is $34.50. Unlimited data for three days is $10.50, and if you’re there for 30 days, you’ll spend $64.50, less than on Saily and Holafly. At this price, Airalo allows you to share your data limitlessly.
Plus, you can pre-purchase the plan and activate it when you’re in the UK. Airalo’s support is available 24/7 for inquiries, and it offers free-to-download apps for iOS and Android. While it usually offers phone numbers for some countries, its UK eSIM plans lack them, which Airalo could improve upon in the future.
5. Nomad (Best Plan: Unlimited Data for 5 Days for $11)
Pros
- 5G coverage in the UK
- Cheap eSIM plans
- Free trial (1 GB of data)
Cons
- No UK phone number
- Plans are limited to ten days
Our last eSIM for the UK, Nomad, has some of the most flexible and inexpensive plans. Its 1 GB plan is only $4.50 for a week. However, you can jump to unlimited data for three days for only $11 or go up to ten days for $31. Nomad almost exclusively relies on 5G in the UK, and in our experience, it was phenomenal.
Connections are fast and stable, while streaming and mobile gaming are buttery-smooth. We also like Nomad for its limitless data sharing and in-app data consumption tracking if you’re on a limited plan. A huge plus is a free trial, with 1 GB for three days in over 80 locations. This is the only free trial eSIM for the UK.
Nomad is easy to set up, with add-on data plans that let you top up your eSIM if you run out of data. It lacks SMS and voice calls, and it doesn’t have longer plans (only up to ten days), so it’s not the #1 eSIM for UK traveling. On the flip side, it has a few business features for eSIM management for multiple users/employees.
Factors to Consider When Choosing an eSIM for the UK
We recently discussed the best overall eSIMs in 2026, and explained that not every eSIM plan is for everyone. Here’s what to consider when choosing an eSIM for the UK, to avoid spending your money in vain:
- Needed data. Don’t buy an unlimited plan if you don’t need it. Check how much data you spend in the given period, and purchase the plan slightly above that, to make sure you have enough internet data in the UK.
- Performance requirement. Will you browse and use the internet lightly in the UK? You can get a 4G eSIM provider like Airalo. If you play games and stream, choose a 5G eSIM provider for the UK with fast speeds (Ubigi is excellent).
- Trip length. Purchase a plan that matches your trip duration to avoid overspending. 30-day plans are the cheapest for GB of data per day, but many times, that’s an overkill if you’re staying in the UK briefly.
The Bottom Line
If you’re looking to avoid roaming costs and stay connected to the internet in the UK, you must get an eSIM. Ubigi and Saily are our favorite options, with Ubigi being a notch above the rest. It’s reliable, affordable, and has superb connection speeds – and you can check out our 2026 complete review here. Most importantly, it’s the least expensive option with unlimited data.
Other options have their advantages, with Holafly’s unlimited data in all plans, Airalo’s highly flexible local and regional plans, and Nomad’s 5G coverage with limitless data and tethering. The final decision is on you. We’ll leave you to it.
Frequently Asked Questions
What’s the cheapest UK eSIM plan?
The cheapest eSIM plan for the UK is Holafly’s unlimited data for a day, at $3.90. But, if you need unlimited data for longer, i.e., a month, Ubigi remains the least expensive at $44, way less than Holafly at over $70.
Roaming vs eSIM, what’s better in the UK?
An eSIM is better than roaming in all cases. It’s way cheaper and has better performance. In roaming, you use your domestic data, while an eSIM relies on data directly from UK telecom operators; a cheaper and better option overall.
Does an eSIM for the UK allow hotspot?
Yes, it does, and you can share data with an unlimited number of devices. Ubigi is best for unlimited data sharing, while Holafly limits you to 500 MB.
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