Compare the Best Travel eSIMs for United Kingdom
Prepaid data eSIMs for visitors to United Kingdom, every plan ranked by real price per GB. This is not a United Kingdom contract or a local SIM. Updated daily.
The 3 best United Kingdom eSIMs right now
Sim Local✓ Verified partner
GigSky✓ Verified partnerSim Local✓ Verified partner
What United Kingdom data actually costs
United Kingdom travel eSIM prices look random until you convert every plan to one number: the real cost per gigabyte. Here is what that reveals right now.
The cheapest plan at each size, 30 days
| Data | Cheapest provider | Total | Price per GB | |
|---|---|---|---|---|
| 50 GB | Ubigi | $32 | $0.64/GB | Get plan ↗🏷 10% off with code TRAVELCITY10 |
| 25 GB | Ubigi | $22 | $0.88/GB | Get plan ↗🏷 10% off with code TRAVELCITY10 |
| 20 GB | Sim Local | $13.50 | $0.68/GB | Get plan ↗🏷 10% off with code ATESIM |
| 10 GB | GigSky | $9.79 | $0.98/GB | Get plan ↗🏷 15% off with code ATESIM |
| 5 GB | GigSky | $8.29 | $1.66/GB | Get plan ↗🏷 15% off with code ATESIM |
| 1 GB | Yesim | $2.62 | $2.62/GB | Get plan ↗🏷 15% off with code TRAVELCITY |
Cost per GB rises from $0.64/GB at 50 GB to $2.62/GB at 1 GB. Buying a little more data than you expect to use is almost always cheaper per gigabyte than buying exactly what you need.
The "unlimited" trap
The same words, unlimited for 30 days, cover a wide price range, and most plans slow down after a daily threshold that the label hides.
| Provider | Unlimited, 30 days | Fair-use cap | |
|---|---|---|---|
| Ubigi | $44 | Confirming | Get plan ↗🏷 10% off with code TRAVELCITY10 |
| Sim Local | $47 | ~10 GB/day | Get plan ↗🏷 10% off with code ATESIM |
| Nomad | $49 | Confirming | Get plan ↗ |
| Maya | $49.99 | Confirming | Get plan ↗🏷 10% off with code ATESIM |
| Yesim | $53.72 | Confirming | Get plan ↗🏷 15% off with code TRAVELCITY |
| GigSky | $65.49 | Confirming | Get plan ↗🏷 15% off with code ATESIM |
| Airalo | $69 | Confirming | Get plan ↗ |
| Saily | $71.99 | Confirming | Get plan ↗ |
Unlimited 30 day plans run from $44 to $71.99, a spread of about 64 percent, for a label that means the same thing on paper. Check the daily cap before you buy, especially if you plan to tether a laptop.
Do not overpay for coverage you will not use
If your whole trip is in United Kingdom, a United Kingdom only plan is far cheaper per gigabyte than a Europe or global plan carrying the same data. Same provider (GigSky), same 50 GB, 30 days:
| GigSky plan | Price | Price per GB | |
|---|---|---|---|
| United Kingdom only | $33.89 | $0.68/GB | Get plan ↗🏷 15% off with code ATESIM |
| Europe | $69.99 | $1.40/GB | Get plan ↗🏷 15% off with code ATESIM |
| Global | $109.99 | $2.20/GB | Get plan ↗🏷 15% off with code ATESIM |
A United Kingdom only plan costs much less per gigabyte than a regional or global plan with the same data. Only pay for the wider plan if you are actually crossing borders on this trip.
Which network does your United Kingdom eSIM use?
This is the question that decides your real signal, and almost no comparison site answers it. The UK has four mobile networks: EE (owned by BT), Vodafone, Three, and O2 (Virgin Media O2). Your travel eSIM connects to one or more of them as a visitor, and that choice matters the moment you leave central London, because rural and rail coverage varies a lot between them.
| Provider | Host network | Status |
|---|---|---|
| GigSky | Three, O2, Vodafone | Confirmed |
| Ubigi | EE and Three | Confirmed |
| Nomad | EE, O2, Vodafone, Three | Confirmed |
| Airalo | EE (via Uki Mobile) | Confirming |
| Saily | Not publicly disclosed | Confirming |
| Yesim | Not publicly disclosed | Confirming |
Providers that ride several networks can switch to a stronger signal where one is weak. Single network plans are tied to that one carrier's performance wherever you go. EE has the strongest rural and rail coverage of the four, so an EE based plan is the safest pick if your trip goes beyond the big cities.
Coverage by where you are going
UK coverage is strong in cities and along motorways and thins out in rural Wales, the Scottish Highlands, Cornwall, and rural Northern Ireland. A few specifics worth knowing before you pick a plan:
- Cities and motorways. All four networks perform well. Any provider on the page will be fine for London, Manchester, Birmingham, and Edinburgh.
- Rural and rail. EE is the safest choice for continuous coverage on country roads and rural train lines, including services to Scotland, the South West, and the Highlands. Three is the weakest of the four in rural areas.
- London Underground. 4G and 5G are now live on most Tube lines, with the rollout completed in 2024 and all four networks having access. Coverage is reliable across Zones 1 and 2.
- Northern Ireland and the Irish border. UK eSIMs cover England, Scotland, Wales, and Northern Ireland. Near the border with the Republic, your phone can latch onto an Irish network by mistake, and a UK only plan will stop working until you move back into UK signal.
- Channel Islands and Isle of Man. These are not part of the UK for mobile data. A standard UK eSIM may not work in Jersey, Guernsey, or the Isle of Man, so check the plan coverage list if your trip includes them.
A Vodafone and Three merger announced in 2024 is forming a combined network, but existing eSIMs still connect to whichever partner the provider chose, so the host networks table still applies.
Travel eSIM vs a standard United Kingdom eSIM
A travel eSIM is not the same as a standard United Kingdom eSIM, and the difference decides which one you want.
A travel eSIM is what every plan on this page is. It is prepaid, mostly data only, the validity starts when you activate it, and you buy it in minutes with no UK address and no credit check. It connects to a UK network as a visitor. This is the right choice for a trip of a few days to a few weeks.
A standard or local UK eSIM is a domestic plan from a UK network like EE, Vodafone, Three, or O2, or from a low cost provider like Giffgaff. It gives you a UK phone number, calls and texts, and often free EU roaming, but it usually needs a UK payment method or address and suits residents or long stays rather than a one week visit.
Quick rule: if you are visiting and mainly need data, choose a travel eSIM from the table above. If you are moving to the UK, or you need a UK number for calls and texts, look at a local UK plan instead. One detail that helps you decide: among the UK domestic networks, O2 is currently the only one of the big four to include EU roaming for all pay monthly customers, while Vodafone charges around 2.42 pounds a day to use your allowance in France.
How a United Kingdom travel eSIM works
A travel eSIM replaces expensive roaming with a cheap local data plan you activate in seconds. There is no plastic SIM and no airport queue. Roaming with your home carrier can run 6 to 12 dollars a day, so a week easily tops 50 to 80 dollars for service you already pay for at home.
Three things to get right:
- Check your phone supports eSIM before you buy.
- Install the eSIM at home over WiFi, but wait to activate it until you land, because the validity period usually starts on activation.
- Keep your physical SIM in the phone for calls and texts on your normal number.
How we rank United Kingdom eSIMs
Every plan on this page is sorted by real price per GB (total price divided by included data, normalised to USD), so a cheap-looking 1 GB plan cannot outrank a better-value 10 GB one. We refresh prices daily and only list providers with a track record of activating on arrival. We earn a small affiliate commission when you buy through our links. It funds the price tracking and never changes the order you see.
United Kingdom travel eSIM FAQ
Which UK network will my eSIM use?
It depends on the provider. GigSky runs on Three, O2 and Vodafone. Ubigi uses EE and Three. Nomad covers all four UK networks. EE has the strongest rural and rail coverage, so an EE based plan is the safest pick if you are heading beyond the big cities.
Will my eSIM work in the Scottish Highlands, rural Wales, or Cornwall?
Coverage thins out in those areas on every network, and Three is the weakest of the four rurally. An EE based plan such as Ubigi gives you the best chance of staying connected on country roads and rural rail.
Does it work on the London Underground?
Yes. 4G and 5G are live on most Tube lines following the 2024 rollout, and all four UK networks have access across Zones 1 and 2.
Will it work in Ireland, the Channel Islands, or the Isle of Man?
Not on a UK only plan. The Republic of Ireland needs its own coverage, and the Channel Islands and Isle of Man run separate networks. Check the plan covers those places if your trip includes them.
Do I need a plan that covers Europe too?
Only if you are crossing borders on this trip. A UK only plan is far cheaper per gigabyte, so buy the wider regional plan only if you are touring several countries.
What is the cheapest eSIM for the UK?
The lowest cost per GB right now is Ubigi's 50 GB plan. For small amounts of data, Yesim tends to be cheapest per gigabyte. The full ranking is in the table above.