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
- Country-specific plans that connect to top local networks
- Works in 200+ countries — ideal for multi-country Europe trips
- Data-only plans from around €4 for 1 GB
- QR code delivered instantly after purchase
- Well-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
- European regional plans covering 30+ countries in one activation
- Competitive data rates with unlimited options in many markets
- eSIM + Wi-Fi calling in some markets
- Virtual phone number available as an add-on
- Smooth 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?
A UK eSIM is inexpensive for a short visit — a few gigabytes for a week typically costs £3–£8, while a 10GB two-week plan runs around £10–£15. Unlimited-data day passes cost more and suit heavy users. Most city breaks don't need more than 5GB, so match the plan to your usage rather than buying the biggest bundle.
How do I activate a UK eSIM instantly?
Activation takes a few minutes: scan the QR code you receive after buying, then add it as a data plan in your phone's mobile settings. Do this before you fly, then switch the eSIM on when you land — it picks up a UK network automatically, so you're online by the time you reach arrivals.
How does an eSIM work in the UK, and will I get 5G?
Most reputable providers run on major UK carriers — EE, O2, and Three — all of which have solid 5G coverage. You'll need a 5G-capable phone and a plan that includes it. Speeds are excellent in city centres; rural areas can be slower, but still fine for maps and messaging.
Ready for London?
Get your United Kingdom eSIM now — takes 5 minutes, works the moment you land.