eSIM for the UK after Brexit: avoid roaming charges
An eSIM for the United Kingdom keeps you connected during a weekend in London, a road trip in Scotland or a family visit. Since Brexit, the UK is no longer part of the European Union, which changes everything for your connection. This guide explains everything with tables, tips and a FAQ.
Do I need an eSIM in the UK?
Often, yes. When the UK was still in the EU, your home plan worked there for free while roaming. That is no longer guaranteed today. Some operators at home still count the UK within their zone, but many treat it as outside Europe, at high rates. Check this in advance, or simply get an eSIM so you do not have to think about it.
Since Brexit: check whether the UK is in your roaming zone. If it is not, switch off the data on your home SIM card and use only the eSIM.
More explanation in eSIM or roaming.
How much data do you need in the UK?
| Type of traveler | Usage | Recommended data |
|---|---|---|
| Light (weekend) | Maps, WhatsApp, the occasional social media | 1 to 3 GB |
| Average (week) | Social media, sharing photos, navigation | 5 GB |
| Heavy (1 to 2 weeks) | Lots of navigation, videos, stories | 10 GB |
| Long trip or sharing | Tethering, working, family | 20 GB or more |
For a weekend in London 3 to 5 GB is enough, for a longer trip or a road trip in Scotland count on 10 GB. Our guide on how much data do you need when traveling helps you choose.
What is the coverage like in the UK?
| Area | Coverage |
|---|---|
| London and major cities | Excellent, 4G and 5G |
| England and Wales | Very good |
| Scottish Highlands | Variable in remote parts |
In the cities and along the tourist routes you are well covered, in remote nature the network can be weaker.
Installing an eSIM for the UK
Install at home over Wi-Fi before you leave. After your purchase you receive a QR code and activation link by email.
- Open the settings for mobile data and choose Add eSIM.
- Scan the QR code, or tap the activation link in the email.
- On arrival, switch on data roaming for the eSIM line.
Full explanation in installing an eSIM on iPhone and Android.
Installing is not the same as activating. The validity usually only starts at your first connection on location. Also check whether your device is compatible using phones with eSIM.
Keeping your home number
Thanks to dual SIM your home number stays reachable for calls and bank codes, while the eSIM handles your data. More in dual SIM with eSIM.
Tips to save data in the UK
- Download offline maps and your itinerary before departure.
- Turn off automatic video playback in apps.
- Set cloud backups and updates to Wi-Fi only.
- Do large downloads via the Wi-Fi at your accommodation.
Frequently asked questions about an eSIM in the UK
Does my home plan still work for free in the UK?
Not always. Since Brexit, many operators treat the UK as outside Europe. Check your terms or get an eSIM.
When does the validity period start?
With most eSIMs only at your first connection to a British network.
What if I run out of data?
With many eSIMs you can easily top up.
Conclusion
Since Brexit, an eSIM is the safest way to stay connected in the UK without risking an expensive bill. Count on 3 to 5 GB for a weekend in London, 10 GB for a longer trip. Install at home over Wi-Fi and activate on arrival. At esimzu you pay easily by card, receive your eSIM instantly by email and benefit from a lowest-price guarantee.