London eSIM — Stay Online in London & Across the UK
1GB / 7 days
$3.90
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London eSIM — Stay Online in London & Across the UK
$3.90
Visiting London? Your London eSIM gets you online the moment you land at Heathrow, Gatwick or any London airport — and it works across the whole UK. No plastic SIM, no roaming shock: scan a QR code and connect.
Why a London eSIM?
- Online on arrival — plan your Tube route, book a ride and message home straight from the airport.
- Covers the whole UK — the same plan works in London, Manchester, Edinburgh and beyond.
- Keep your number — data-only, so your home SIM stays in for calls and codes.
Perfect for exploring London
From Big Ben and the London Eye to the museums, markets and a walk along the Thames, you'll want maps, transport apps and to share photos in real time. London has strong 4G/5G coverage, including on much of the Underground.
How much data do you need?
For maps, messaging and social sharing, 3–5GB covers a typical city break. Longer stay or lots of streaming? Size up — you can add another plan anytime.
Set up before you fly
Install at home over Wi‑Fi and switch it on when you land. See our setup guide — about five minutes.
FAQ
Does it only work in London?
No — a London eSIM covers the whole of the UK, so you're connected on any trip out of the city.
Will my phone work?
Most phones from 2019 onward support eSIM. Check the compatibility list.
- Networks: EE 5G, 3 4G
- 4G/LTE and 5G where the local network supports it
- Hotspot and tethering supported
- Validity starts on first connection in United Kingdom, not at purchase
- Data only — no phone number, no calls, no SMS
- Install now, travel later — usable for 180 days after purchase
Requires an eSIM-compatible, carrier-unlocked device. Check the Device Compatibility page before buying, and see the Fair Usage Policy for how the allowance is measured.
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Delivered in minutes
QR code by email, right after payment
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180-day refund
Full refund if you never install it
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Keep your number
Your own SIM stays in the phone
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Data only
No calls or SMS — apps work as usual
London travel data eSIM
What is a London eSIM?
A London eSIM gives visitors a data‑only plan that activates as soon as they arrive in the United Kingdom. After scanning a QR code, the eSIM connects to the EE 5G or 3 4G networks, so you stay online whether you are exploring the capital or traveling to other parts of the country. No physical SIM is needed, and you avoid roaming charges while moving freely across England, Scotland, Wales or Northern Ireland.
Once installed, the eSIM works with EE 5G and 3 4G networks. Your device will use whichever of these operators is available in your location, letting you browse, stream and use apps throughout the United Kingdom without swapping cards.
Operators on this planEE 5G, 3 4G
No physical SIM card100% digital, delivered as a QR code
4G/LTE and 5GWhere the local network supports it
Keep your home numberData only: calls and texts stay on your own SIM
Fixed price, no surprisesPaid up front, no meter running
Local networks
Which networks you connect to in London
When you arrive, the eSIM connects to EE 5G, 3 4G. Coverage and speed depend on your exact location and the operator available there.
EE 5G3 4G
5 plans are available for London, from $3.90 up to $19.90. Every plan is data only, delivered by QR code, and starts counting when you connect on arrival.
WestminsterCamdenSouthbankGreenwichOne plan for all of London, starting on first connection.
Good to know
Staying connected in London: practical tips
WestminsterUse mobile data for the Tube map app and real‑time bus timetables to navigate landmarks like the Houses of Parliament and Buckingham Palace.
CamdenAccess ride‑share apps and live event listings to find music venues, markets and street food stalls while you explore the neighbourhood.
SouthbankDownload translation and museum audio guide apps to enrich visits to the Tate Modern, the Globe Theatre and riverside attractions.
Four simple steps to use CometSIM
From checking your phone to landing online — the whole thing takes about two minutes, and you do most of it before you fly.
Step 1
Compatibility
Make sure your phone works with eSIM. It takes ten seconds — just dial a code and check.
Check compatibility
Step 2
Destination
Choose your country and the data plan that fits your trip. Prices are in USD, no surprises.
See all destinations
Step 3
Install your eSIM
Scan the QR code we email you. Install it at home on Wi-Fi — ready in a couple of minutes.
Setup guide
Step 4
Land & connect
Switch it on when you arrive. Your data starts on arrival, and your own number stays exactly where it is.
You’re online
Complete your trip
Add VPN
Add CometSIM VPN to your trip
Stay safe on hotel and airport Wi-Fi and reach home content. Your eSIM carries the data, the VPN protects it.
Questions people actually ask
If yours is not here, write to us — we answer within 24 hours.
Which operators does the London eSIM use and what does that mean for a traveller?
The eSIM connects to EE 5G and 3 4G networks. This gives you access to the services those operators provide, allowing you to stay online wherever their network is present in the United Kingdom.
Does the plan work outside London in other parts of the United Kingdom?
Yes, the plan is a United Kingdom eSIM. It remains active and can be used in Scotland, Wales, Northern Ireland and any other region where 3 4G or EE 5G have network presence.
Which plan size is suitable for a short visit to London?
For a brief stay, the 1 GB / 7‑day plan often suffices for essential navigation and messaging, while the 3 GB / 30‑day option offers extra data for occasional streaming or longer trips.
Will I lose my own phone number?
No. Your physical SIM stays in the phone and keeps your number for calls and WhatsApp. The eSIM only carries data, so both work side by side.
When does my plan start counting down?
When the eSIM first connects to a network at your destination — not when you buy it. So you can install it days before you fly without losing any time.
Is my phone compatible?
Most phones from 2018 onwards are: iPhone XS and later, Google Pixel 3 and later, Samsung Galaxy S20 and later. Your phone also has to be carrier-unlocked. Dial *#06# — if an EID appears, you have eSIM. Full list on our Device Compatibility page.
How fast will I get my QR code?
Usually within a couple of minutes of payment, by email. If it has not arrived, check spam first, then write to us and we will resend it immediately.
Can I use hotspot or tethering?
Yes, on every plan we sell. Share the connection with a laptop, a tablet or the rest of your group.
What if I change my mind?
If you have not installed the eSIM, you get a full refund within 180 days. Once a profile is activated and data has been used it cannot be refunded — the allowance is consumed from the network. Full detail in our Refund Policy.
Do you sell plans for groups?
Yes. For Umrah and Hajj groups, student trips and tour operators we deliver the QR codes as a single batch before departure, at group rates. Email us with your group size and destination.