Best eSIM for United Kingdom (2026)
Compare prepaid eSIM data plans for United Kingdom side by side. Every plan installs on your phone before you fly, connects automatically on arrival, and costs a fraction of international roaming.
Right now there are 10 prepaid eSIM plans for United Kingdom, priced from $0.51 to $47.60. The strongest value is the 50 GB / 30 Days plan at $28.90 — roughly $0.58 per GB. Every plan runs on United Kingdom's local networks, including O2, EE, 3.
Our picks
Cheapest plan
100 MB · 7 Days
$0.51
$5.22 per GB
Best value per GB
50 GB · 30 Days
$28.90
$0.58 per GB
How to choose the right plan
- Light use — maps, messaging and browsing — needs about 1 GB per day.
- Heavy use — social video, streaming or hotspotting a laptop — plan for 2-3 GB per day or pick the largest plan.
- Match the validity to your trip length, with a day or two of buffer for delays.
How activation works
- Buy the plan and receive your eSIM by email within minutes.
- Install it from your phone settings while still at home — no store visit, no plastic SIM.
- Land in United Kingdom, enable the eSIM line, and you are online before leaving the airport.
All United Kingdom eSIM plans
Contactless transport, train e-tickets and walking directions through winding streets: the UK runs on your phone. Land at Heathrow with an eSIM already installed and you are online before you reach passport control.
Live Tube status, advance train tickets and a walking route through a village with no street signs: the UK is a phone country. Land with an eSIM and Heathrow Express is a tap, not a Wi-Fi scavenger hunt.
Frequently asked questions
How much does an eSIM for United Kingdom cost?
There are currently 10 prepaid plans for United Kingdom, ranging from $0.51 for a small starter package up to $47.60 for the largest option. Prices are one-off purchases — no subscription and no hidden roaming charges.
Which United Kingdom eSIM offers the best value?
Measured by price per gigabyte, the best deal right now is the 50 GB plan valid for 30 Days at $28.90 — about $0.58 per GB. It is the plan we would recommend for most trips to United Kingdom.
Which networks does a United Kingdom eSIM connect to?
Our United Kingdom plans connect to local networks such as O2, EE, 3 — the same infrastructure domestic SIM cards use, so coverage matches what locals get.
Are the plans 4G or 5G?
Speeds depend on the plan and your location: most United Kingdom plans include 4G/LTE, and many support 5G where the local network provides it. Each plan's supported speed is shown in the comparison above.
