eSIM London: Prepaid Data Plans
London eSIM plans start at $3.49 for 2 GB (15 days). 84 plans from 7 vetted providers on EE, Vodafone, O2 (UK), and 3, hotspot on every plan. Buy online, install and top up in one MobiMatter app. Prices updated ·
London eSIM at a glance
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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 London eSIM on MobiMatter costs $3.49 for 2 GB, valid for 15 days. Prices come live from 7 vetted providers and change often; the price on this page is the current one.
Is it worth getting an eSIM for London?
For most tourists and business travellers, yes, if your phone supports eSIM. London plans start at $3.49 for 2 GB, and you install the eSIM before you fly, so you have data when you land, without queuing for a tourist SIM at the airport. 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, Vodafone, O2 (UK), and 3. Every plan names its network, so you can choose the carrier you prefer before you buy.
Which eSIM is best for London?
Our best plan for London right now is 999 GB for 30 days at $49.99 from eSIMGo. We rank plans on quality and value for money, and this one comes first in the list. If price per GB is all that matters, the lowest right now is $0.73 per GB, with 50 GB for 30 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 37 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 84 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
Very easy comparisons, straight forward, no hassle No fuss just easy esim comparisons and purchases
AAnoixi
App Store5.0
It's a great app. I haven't had any problems with the internet.
GGokmen Turkoglu
Play Store
4.0
We could not have crossed the Balkans for 3 weeks without Mobi !!!!
KKeith Van der Spuy
Play Store5.0
I needed an eSIM for EU and non-EU counties for the same trip. They had one package at a great price that worked great in all location. The app was great as I was able to check my data balance, in real time, quickly and easily during my trip. Would definitely use MobiMatters again. Downloading the eSIM was quick and easy too. In addition, when I reached out to Customer Support on a minor account issue, they were very responsive and addressed my issue quickly and effectively.
CCcjr39
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 Store5.0
Used this app for mobile data while in Malaysia for a few days last week. I rate it 10/10 for ease of use, affordability and for effectiveness too. After 5 days of regular usage, I still have 8GB left out of 10GB
OOJ Meduna
Play Store5.0
The best eSim app in the world. The support team is legendary.
BBarat Baghirli
Play Store5.0
Amazing app! Using it 3 years and never had any problem. I recommend it to everyone
RRéka1209
App Store5.0
I often travel a lot and the eSIM always works very well, strong connection and I feel I have much longer internet as wel. Besides the customer service responds extremely quick, having your questions answered in no time.
MMayNais
App Store5.0
I bought two esims for two different countries because mobimatter has affordable prices. I had an issue connecting the second esim. The helpdesk responded fast. It turns out I was using the first eSIM instead of the second. Thanks for good data in both countries and for responding fast!
SStylus86
App Store5.0
The best application with the lowest prices! I recommend!
Translated from Bulgarian
ЦЦветан Тодоров
Play Store5.0
They respond immediately when an issue arises and are very helpful; you can use it with peace of mind.
Translated from Turkish
SSerkan7826
App Store
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