
United Kingdom (UK) eSIM
Stay connected in United Kingdom from €1.24. Instant eSIM with 5G data, delivered by QR — no physical SIM and no roaming bills.
Networks in United Kingdom
Your eSIM connects automatically to 3 United Kingdom, EE Limited, O2 and Orange at up to 5G speeds, picking depending on your selected plan, device and location. Some plans here also include calls and texts with a local number.
United Kingdom data plans
36 plans available · cheapest first, including 17 unlimited.
3 days · 5G · €1.24/GB
Buy now1 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now1 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now3 days · 5G · €0.97/GB
Buy now7 days · 5G · €1.00/GB
Buy now30 days · 5G · €1.03/GB
Buy now3 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now7 days · 5G · €0.89/GB
Buy now15 days · 5G · €0.92/GB
Buy now30 days · 5G · €0.96/GB
Buy now5 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now3 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now7 days · 5G · €0.78/GB
Buy now7 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now15 days · 5G · €0.82/GB
Buy now30 days · 5G · €0.86/GB
Buy now10 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now5 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now15 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now15 days · 5G · €0.70/GB
Buy now30 days · 5G · €0.75/GB
Buy now7 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now20 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now31 days · Unlimited calls · Unlimited SMS · 5G · €0.89/GB
Buy now10 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now30 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now15 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now30 days · 5G · €0.65/GB
Buy now20 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now30 days · Unlimited calls · Unlimited SMS · 5G · €0.67/GB
Buy now31 days · Unlimited calls · Unlimited SMS · 5G · €0.71/GB
Buy now90 days · 5G · €0.76/GB
Buy now31 days · Unlimited calls · Unlimited SMS · 5G · €0.45/GB
Buy now30 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now30 days · Unlimited calls · Unlimited SMS · 5G
Buy now30 days · 5G · €0.59/GB
Buy nowWhy travelers choose Roamsim in United Kingdom
- Instant delivery — your United Kingdom eSIM arrives by QR seconds after payment.
- Flat, upfront pricing — no bill shock, no roaming surprises.
- Keep your main number while using local data on a second line.
- 24/7 in-app support from real people, wherever you travel.
United Kingdom eSIM by plan size
Already know how much data you need? Jump straight to it.
Regional plans that cover United Kingdom
Visiting more than one country? These regional eSIMs include United Kingdom and are usually cheaper than buying each destination separately.
eSIM by city in United Kingdom
Any United Kingdom plan covers the whole country — these pages cover arriving, coverage and the local quirks city by city.
How to choose an eSIM for United Kingdom
Which network you'll be on
The UK has four mobile network brands: EE, O2, Vodafone and Three. Vodafone and Three merged into one company in 2025. All of them cover the cities and main roads well, with more difference between them in the countryside. The networks our UK plans use are listed on this page.
If you have an EU SIM
The UK left the EU's roam like at home rules after Brexit, so an EU or EEA SIM is no longer guaranteed to work at domestic rates in the UK. Some EU providers still include the UK in their allowances and others charge for it. Check with your provider before you travel; if they charge, a travel eSIM is usually the simpler option.
Coverage outside the cities
Coverage is strong across England's cities and main routes, but thins out in the Scottish Highlands and islands, parts of Wales, the Lake District and other upland areas. Mobile coverage on the London Underground is being rolled out and now reaches many stations and tunnels, but not all. Download offline maps before hiking or driving in remote areas.
How much data a UK trip takes
A London city break uses data mainly for maps, journey planners such as Citymapper or TfL Go, and messaging; a few gigabytes covers a week for most people. A touring trip by car or train uses more for navigation and timetables, and the Trainline app is useful for buying rail tickets. You can tap in on London transport with a contactless card or phone.
Not sure how much you need? How much data do you need for a trip
Planning the trip? United Kingdom travel guide: highlights, best time to visit, plugs, money and getting around
United Kingdom eSIM — FAQ
How do I get an eSIM for United Kingdom?
Pick a United Kingdom data plan below, pay by card or crypto, and we deliver your eSIM instantly. Scan the QR code and you're connected in minutes — no physical SIM, no store visit.
Will my phone work with a United Kingdom eSIM?
Most phones from the last few years support eSIM, including iPhone XS and newer, Google Pixel 3+, and recent Samsung Galaxy S/Z models. Your phone must be carrier-unlocked.
Does the United Kingdom eSIM include 5G?
Yes — our United Kingdom plans connect to 5G where the local network supports it, and fall back to 4G/LTE automatically.
Which network will I connect to in United Kingdom?
Our United Kingdom plans use partner networks including 3 United Kingdom, EE Limited, O2 and Orange. Available networks depend on the selected plan, device and location.
Can I make calls and send texts in United Kingdom?
Some of our United Kingdom plans include calls and texts alongside data, and come with a local number. Data-only plans are cheaper if you just need internet — the plan list below says which is which.
Is there a plan that covers United Kingdom and other countries?
Yes. Europe, Global Lite, Europe + Balkans and Global Max are regional plans that include United Kingdom, which is usually cheaper than buying each country separately on a multi-stop trip.
Can I keep my own phone number?
Yes. The eSIM runs as a separate data line, so you keep your main number for calls and texts while using United Kingdom data on the eSIM.
When does my plan start?
Activation rules vary by plan. Check the activation note at checkout before installing your United Kingdom eSIM; some plans start on connection or first data use, while others have different activation rules.
What is the best eSIM for the UK?
The best one is the plan with enough data for your trip and validity for all your days there, on a network that covers where you're going. For London and other cities any of the UK networks works well. If you're heading to the Highlands or rural Wales, check which networks our UK plans use on this page.
Does my EU phone plan work in the UK?
Not automatically. Since Brexit the UK is outside the EU's roam like at home rules, so whether your EU or EEA SIM works at no extra cost depends on your provider. Some include the UK, others charge daily or per-megabyte fees. Check before you go, or use a travel eSIM for data.
Does a UK eSIM work on the London Underground?
In many places, yes. Mobile coverage is being rolled out across the Underground and already reaches many stations and tunnel sections, but some lines and stretches still have no signal. Download what you need before you go underground if you're relying on it.
Ready for United Kingdom?
Get connected from €1.24 — installed before you land.