London, Edinburgh, the Cotswolds, the Lake District: a UK trip often means trains, buses, and plenty of map checks. The best UK eSIM gets you online at Heathrow or Gatwick without paying roaming rates, so you can plan routes, book tickets, and find a decent pub on the go.
This guide explains how to choose an eSIM for the UK, which egoViet plans fit city breaks and road trips, and when a Europe eSIM is the better option.
In this guide:
- Why get an eSIM for the UK?
- How to choose a UK eSIM
- egoViet UK eSIM plans
- Continuing to Europe? The Europe eSIM
- Which plan is right for you?
- How to set up your UK eSIM
- Tips for staying connected in the UK
- FAQs
Why Get an eSIM for the UK?
- Avoid post-Brexit roaming fees. Many EU carriers now charge for roaming in the UK, and non-European carriers often charge a lot.
- Online from the arrivals hall, ready for the Tube, trains, or a ride.
- Keep your number for bank codes and messages from home.
- No SIM shop trip on your first day.
How to Choose a UK eSIM
Trip length
Pick a plan that covers your whole stay plus a spare day for flight times. egoViet plans can't be topped up, so it is better to size up than to run short. If your high-speed data does run out, you stay online at a basic speed of around 128 kbps, enough for messaging.
How much data you use
Maps, rail apps, and messages use little data. Streaming on long train journeys and video calls use much more. Here is a guide to how much data you need when you travel.
Where you are going
For a UK-only trip, a UK eSIM is the best value. If you are continuing to Paris, Amsterdam, or elsewhere in Europe, see the Europe eSIM below.
egoViet UK eSIM Plans
The egoViet UK eSIM connects to the Three and O2 networks, with 5G/4G coverage in cities and towns across England, Scotland, Wales, and Northern Ireland. Every plan supports hotspot and tethering. Here are some popular options (prices in USD, checked in October 2026; see the product page for current prices):
Fixed data plans
| Data | Validity | Price |
|---|---|---|
| 3 GB | 7 days | $4.00 |
| 5 GB | 30 days | $11.00 |
| 10 GB | 15 days | $16.00 |
| 30 GB | 7 days | $17.00 |
| 30 GB | 30 days | $40.00 |
| 50 GB | 30 days | $53.00 |
Daily data plans
| Data | Validity | Price |
|---|---|---|
| 500 MB/day | 3 days | $4.00 |
| 500 MB/day | 30 days | $23.00 |
| 1 GB/day | 15 days | $17.00 |
| 2 GB/day | 5 days | $11.00 |
| 3 GB/day | 3 days | $9.00 |
| 3 GB/day | 30 days | $76.00 |
Unlimited plans
| Data | Validity | Price |
|---|---|---|
| Unlimited | 3 days | $7.00 |
| Unlimited | 5 days | $11.00 |
| Unlimited | 7 days | $15.00 |
| Unlimited | 10 days | $20.00 |
| Unlimited | 15 days | $28.00 |
Continuing to Europe? The Europe eSIM
Many trips combine London with Paris, Amsterdam, or Dublin. The egoViet Europe eSIM covers the UK along with more than 30 European countries, including Ireland, France, and the Netherlands, so you can cross by Eurostar or ferry without changing plans.
Here is everything you need to know about eSIMs for Europe.
Which UK eSIM Plan Is Right for You?
| Your trip | Our pick |
|---|---|
| Long weekend in London | A small fixed plan for 3–5 days |
| One week: London and Edinburgh | 5–10 GB for 7 days |
| Two weeks with a road trip | A 15-day plan with 10 GB or more |
| Remote work or heavy streaming | Unlimited for your full stay |
| UK plus Paris, Amsterdam, or Dublin | Europe eSIM |
How to Set Up Your UK eSIM
- Check your phone is eSIM-compatible and carrier-unlocked. See our eSIM compatibility list.
- Buy your plan. The QR code arrives by email within minutes.
- Install it at home on Wi-Fi with our installation guide.
- When you land in the UK, switch the eSIM on, set it for mobile data, and turn on data roaming for that line. Keep data roaming off on your home SIM.
Tips for Staying Connected in the UK
- Tap to pay on public transport. Contactless cards and phone wallets work on the Tube and London buses, with daily fare caps.
- Use Citymapper or Google Maps for London, and the National Rail or Trainline apps for intercity trains.
- Download offline maps for rural areas. Signal can be weak in the Scottish Highlands, Snowdonia, and parts of the Lake District.
- Check your plan before Ireland. Northern Ireland is in the UK, but the Republic of Ireland is a separate country. Use the Europe eSIM if you cross the border.
- Need to call? egoViet eSIMs are data-only, so use WhatsApp or FaceTime. Here is how calling works with a data-only eSIM.
FAQs: eSIMs for the UK
What is the best eSIM for the UK?
For a UK-only trip, a UK eSIM is the best value. egoViet's UK eSIM uses the Three and O2 networks and offers fixed, daily, and unlimited plans.
Does the Europe eSIM work in the UK?
Yes. The egoViet Europe eSIM includes the United Kingdom, which is handy if you are also visiting other European countries.
Does the UK eSIM work in Scotland, Wales, and Northern Ireland?
Yes, it covers the whole United Kingdom. Coverage can be weaker in remote rural and mountain areas.
Does the UK eSIM include a phone number?
No, it is data-only. Use WhatsApp or FaceTime for calls and keep your home SIM active for SMS codes.