Order your eSIM for London: Stay Connected in The United Kingdom
Get a United Kingdom eSIM before you fly to London. Compare options and benefit from instant activation, no SIM swap, and no unexpected roaming fees.
Connectivity in London
Local operators
EE, O2, and Vodafone are the strongest networks in London. EE has the most consistent 5G rollout across inner London.
Coverage
Coverage is strong everywhere above ground. Underground signal has improved on the Elizabeth line and parts of the Jubilee and Central lines — though older sections can drop. Overground and Elizabeth line have good indoor coverage.
How much data?
5–10 GB for a week in London. Maps navigation, streaming music, and catching up on messages while commuting on the Tube adds up. Hotels and most cafés have free Wi-Fi.
Using your phone in London
For non-UK visitors, roaming charges in London add up quickly — a week of Tube navigation, restaurant bookings, and streaming is enough to make an eSIM worth it. EE has the strongest 5G rollout across Zone 1–3, with particularly good coverage on the Elizabeth line and Overground.
How an eSIM works
Buy online
Choose your plan and purchase. No physical SIM is shipped.
Scan QR code
Open your phone settings and scan the QR code from your email.
Arrive and connect
Your eSIM activates automatically when you land and detects the local network.
Use your data
Your home SIM stays active for calls. Use eSIM data without roaming charges.
Compare providers
Both work in United Kingdom. Here's how they compare for your London trip.
Airalo
Largest networkWorld's largest eSIM marketplace
200+ countries including all EU destinations
- check_circleCountry-specific plans that connect to top local networks
- check_circleWorks in 200+ countries — ideal for multi-country Europe trips
- check_circleData-only plans from around €4 for 1 GB
- check_circleQR code delivered instantly after purchase
- check_circleWell-rated iOS and Android app
Best for
Single-country trips or precise country-by-country coverage
Yesim
Best for EuropeSeamless European connectivity
150+ countries with Europe-wide regional plans
- check_circleEuropean regional plans covering 30+ countries in one activation
- check_circleCompetitive data rates with unlimited options in many markets
- check_circleeSIM + Wi-Fi calling in some markets
- check_circleVirtual phone number available as an add-on
- check_circleSmooth app with real-time data usage tracking
Best for
Multi-country European itineraries or travellers who want one plan across borders
Does your phone support eSIM?
Most phones released after 2019 support eSIM — including iPhone XS and later, Samsung Galaxy S20 and later, and Google Pixel 3a and later. To check: on iPhone, go to Settings → General → About → Available SIM. On Android, Settings → Network → SIM card → Add eSIM.
Carrier-locked phones (bought on a contract) may not support eSIM until the lock is removed. Contact your carrier if you're unsure.
eSIM questions
How much does a UK eSIM typically cost?expand_more
A UK eSIM typically costs very little for a short visit - a few gigabytes for a week costs roughly £3-£8 from most providers, while 10GB for a two-week plan is around £10-£15. Unlimited-data day passes cost more but suit heavy users. Prices depend on data size and validity, so you may prefer a plan matched to your usage rather than the biggest bundle - for most city breaks you won't need more than 5GB.
How do I activate a UK eSIM instantly?expand_more
You can activate your UK eSIM in a few minutes by scanning the QR code you receive after buying from a retailer. Access your mobile-data settings, add a data plan, and scan it - do this at home before you fly, then toggle the eSIM on when you land. It picks up a UK network automatically, so you're online as you walk through arrivals.
How does an eSIM work in the UK, and will I get 5G?expand_more
Most reputable suppliers provide 5G connectivity in the UK, as they run on major carriers like EE, O2 and Three, which have solid 5G across the United Kingdom. You'll need a 5G-capable phone and a plan that includes it, though. Speeds in city centres are excellent; with the exception of rural areas, which is still fine for maps and messaging, but sometimes slower.
Ready for London?
Get your United Kingdom eSIM now — takes 5 minutes, works the moment you land.