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eSIM London: Prepaid Data Plans
London eSIM plans start at $3.49 for 2 GB; our top plan for London alone is 999 GB for 30 days at $49.99 (eSIMGo), the top multi-country one 50 GB at $36.49 (2 countries). Here a multi-country plan costs less per GB than any plan for London alone (87 plans from 7 vetted providers). Prices updated ·
London eSIM at a glance
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Your next trip.
Connected.
Choose your travel eSIM and manage it in the MobiMatter app.
Networks used by London eSIMs
Each plan connects to the networks listed on its page, so you choose your carrier before you buy. Coverage varies by area: a listed network does not guarantee signal everywhere.
Frequently Asked Questions
Does my eSIM work on the London Underground?
More and more, yes. TfL is rolling out 4G and 5G to all Underground ticket halls, platforms and tunnels with EE, Vodafone, O2 and Three, and says half of the below-ground stations now have a signal; the Elizabeth line has it at every station. Travel eSIMs use these same UK networks, so your phone picks up the signal automatically, with nothing to set up.
Reviewed Oct 8, 2026 · Source
Should I set up my London eSIM before I land at Heathrow?
Yes. Install it at home over Wi-Fi, then turn it on when you land and it connects to a UK network straight away, so you have maps and messages on the way into London. If you still need to install or top up on arrival, Heathrow has free Wi-Fi in every terminal; you register once on the network.
Reviewed Oct 8, 2026 · Source
What is the cheapest eSIM for London?
The cheapest plan that works in London is a multi-country one: $3.49 for 2 GB, valid for 15 days. The cheapest plan for London alone is 1 GB for 7 days at $5.99. Prices come live from 7 vetted providers and change often.
Is it worth getting an eSIM for London?
For most travellers, yes, if your phone supports eSIM. London plans start at $3.49 for 2 GB, and the longest lasts 365 days, which suits long stays and repeat visits. If your home plan already covers London at no extra cost, you may not need one.
Which networks do London eSIMs use?
London eSIMs on MobiMatter run on EE, O2, Vodafone, 3, and 3UK; 5G plans are available on EE, O2, Vodafone, and 3. EE carries the most plans. Each plan names its network, so you choose your carrier before you buy.
Which eSIM is best for London?
For London alone, our top plan right now is 999 GB for 30 days at $49.99 from eSIMGo. If London is one stop of several, the top multi-country plan is 50 GB for 30 days at $36.49 from Sparks, covering 2 countries. If price per GB is all that matters, the lowest right now is $0.67 per GB, with 30 GB for 15 days.
How much data do I need for a week in London?
It depends on how you use your phone. Light use (maps, messaging, browsing) takes about 0.5–1 GB a day; scrolling a lot of social video can take 2–3 GB or more. Typical use per hour:
- Instagram Reels, TikTok: 0.3–1 GB
- YouTube, Netflix at standard quality: 0.5–1 GB
- Video calls (WhatsApp, FaceTime): 0.5–1 GB
- Voice calls (WhatsApp, FaceTime Audio): 50–70 MB
- Maps and navigation: 2–6 MB
- Messaging and browsing: 50–150 MB
The cheapest London plan with at least 5 GB for a week or longer is 5 GB for 30 days at $6.49.
Is there an unlimited data eSIM for London?
Yes. Unlimited data plans for London start at $7.99. Many unlimited plans slow down after a daily high-speed allowance, so check the fair-use terms on the plan page before you buy.
Do London eSIMs support 5G and hotspot?
5G is available on 40 plans for London, where the local network has 5G coverage; the others use 4G/LTE. Hotspot (tethering) works on every plan, so you can share your data with other devices.
Does a London eSIM come with a phone number?
Most travel eSIMs, including most London plans, are data-only and have no local number. You keep your usual number on your main SIM for calls, texts and WhatsApp. Plans that include a number or minutes say so on the plan page.
How it works
- 1
Checkout using secure payment methods
Get your eSIM by email within seconds.
- 2
Install eSIM
Instantly get your eSIM and configure it in your eSIM compatible device
- 3
Enjoy high speed connectivity
Once eSIM is configured, you can enjoy high speed roaming data connectivity
Why get your London eSIM from MobiMatter
All your eSIMs in one app
Buy, install and top up every eSIM in the MobiMatter app, and check how much data you have left at any time.
Choose your network
MobiMatter shows which network each plan uses, so you choose your carrier before you buy. Pick from 87 plans from 7 vetted providers with the data and price that fit your trip.
24/7 support
Our support team is available 24/7, before and after you buy, for every eSIM you get from MobiMatter.
What our customers say
5.0
"I have used the program in several countries in East Asia and Arab countries, and it was a very good option."
Translated from Arabic
االكلباني 707
App Store5.0
The price-performance ratio is excellent. I definitely recommend it.
SSerkan Solmaz
Play Store5.0
The best and reliable place to get eSim for international travel at the best rates.
AAyush Dhaubanjar
Play Store5.0
very convenient app to buy an eSim for travelling, you can choose the countries you need and have it in one pack, you can filter the options by the GB space and sort it by price, so it takes less time then just manually comparing different eSim apps. Local 5G internet works well
PPashaminin
App Store5.0
great service and it is always with me when I'm on travel
AAkmal Bakhronov
Play Store5.0
I used it smoothly and quickly in the Netherlands, Belgium, Germany, Spain, and Bulgaria. Sparks connects to the most suitable network for your location at that moment, allowing for convenient use. Depending on your travel plans, annual options are very advantageous because it consumes very little internet data there, unlike in Türkiye.
Translated from Turkish
ÖÖnder azat
Play Store5.0
Great, quick and profesional support! Thank you guys! ❤️
TTiki_sa
App Store5.0
Super and affordable, they also help directly with problems.
Translated from German
UUstababaGS
App Store5.0
My favorite internet application in the world is distinguished by its fast internet activation and ease of use, in addition to cash back.
Translated from Arabic
AAzzo fahad
App Store5.0
In Turkey and Georgia in the summer of 2025, I used the app, and everything worked perfectly! The prices are cheaper than buying a SIM card at the airport.
Translated from Russian
YYury2701
App Store5.0
MobiMatters came highly recommended in family-oriented travel groups on social networks, when I was researching on travel eSIMs for Iceland. The first package I started with was a US + Europe - it was easy to activate before leaving home (and verifying), and then continue on landing in Reykjavik. Unthinkable speeds (given we are used to Verizon and TMobile in the US) - over 400 Mbps on the Fast app! Unlimited tethering options allowed me to use across my MacBook and phone, as well as share across the family with the kids on iPads and phones. Navigation on Google and Waze was aa breeze with the constant high speed data connectivity. Our plans did not support phones (we knew this) but with WhatsApp and FaceTime allowing audio and video calls we never felt the need for basic phone service. Customer service on email was responsive and helpful when I wanted to understand how top-ups work. Highly recommend MobiMatters - I’m on my third top-up as we speak!
KKundan Sen
App Store5.0
The best eSim provider in the world. In case you don't have experience and don't know how to start, they respond within just a few minutes via email. They are TOP
RRedzad Dikonja
Play Store
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