London eSIM guide for Gulf travellers: London and day trips

How to stay online in London and day trips: which networks a travel eSIM uses, where coverage is weak, how much data you need and how to set it up before you fly.

For a trip to London, a travel eSIM gives you data from the moment you land, without a local SIM shop or roaming charges from your Gulf carrier. It runs on UK networks (EE, Vodafone, O2, Three), and your home number stays on for WhatsApp, calls and bank texts.

Coverage in London and day trips

Central London: strong 4G and 5G on the streets, in shops and in most of the Underground.

Heathrow and Gatwick: strong in the terminals and on the trains into town.

Day trips to Oxford, Cambridge or the coast: good in towns; gaps on some rural train stretches.

How much data do you need?

Light use (about 0.5 GB a day): maps, WhatsApp and ride apps.

Normal use (about 1 GB a day): the above plus photos, social media and some video calls.

Heavy use (2 GB or more a day): streaming, many video calls, or sharing data with the family.

Travelling as a family? Give each phone its own plan, or buy a bigger plan for one phone and share it with a hotspot.

A tip for London

Since Brexit, many Europe plans leave out the UK. If you visit London and Europe on one trip, check that the plan lists the United Kingdom.

How to set it up

Check that your phone is unlocked and supports eSIM on our supported devices page.

Buy your plan and install it at home on Wi-Fi. It takes about two minutes.

When you land, turn on the travel eSIM, choose it for mobile data and turn on data roaming for it.

Keep your home line on for calls and texts, with its data roaming off.

Bottom line

Install the plan before you fly and turn it on when you land. See all UK eSIM plans, with prices updated live.