Internet in the UK: A Traveller's Guide
Updated: October 2026
Short answer: The UK's trap is Brexit: many "Europe" data plans no longer include the UK, and most travellers find out when they land in London. With the UK eSIM, or a regional plan that explicitly lists the UK, you never meet that surprise.
Your options
1. Roaming with your home SIM: For a US, Canadian, Australian or Gulf carrier the UK is a foreign country like any other: an international day pass, roughly ten dollars a day, or steep pay-as-you-go rates. For an EU SIM the UK has been outside "roam like at home" since Brexit; some carriers still include it, many do not, so check before you fly. Either way the cost per GB is high (our roaming vs eSIM guide).
2. Local SIM: Prepaid cards are easy to find in supermarkets and chain stores, and there is little registration to worry about; but it means a trip to the shop, a physical card, and taking your home SIM out.
3. eSIM: Installed at home, with your home SIM staying in place. You are connected when you land at Heathrow. If London is one stop on a European tour, the EU + UK eSIM covers both sides in one plan.
Coverage, honestly
- London, Manchester, Edinburgh and the tourist routes have excellent coverage; 5G is standard in the cities.
- Most Underground stations now have signal; drops in the tunnels are normal.
- In the remote parts of Scotland and in the Lake District the signal can weaken.
Practical tips
- In London you pay for transport with a contactless card or your phone; apps like Citymapper are useless without internet.
- Museum and show tickets mostly travel on your phone as QR codes.
- If you tap in with your phone instead of an Oyster card, you are relying on its battery and its connection; both are in your hands.
Ready? See the UK eSIM plans; from a weekend break to a long visit.