What is the best eSIM for London?

The best eSIM for London depends on how many days you're staying and how much data you need. Onetel offers Unlimited and Fixed GB plans specifically for London, United Kingdom — with instant QR code delivery and no roaming fees.

Do I need a local SIM card in London?

No. An eSIM is a digital alternative to a local SIM. You activate it remotely before your trip and it works as soon as you land in London.

Does my phone work with an eSIM in London, United Kingdom?

Most phones released after 2018 support eSIM, including all iPhone XS and later, Google Pixel 3 and later, and Samsung Galaxy S20 and later. Your device must also be carrier-unlocked.

Can I get a refund on a London eSIM plan?

Yes. If your eSIM has not been activated, you can request a full refund within 30 days of purchase. Contact Onetel support and we'll process it promptly.

🇬🇧 eSIM for London

Starting at $2.70/day*

Unlimited data
7-day validity
Fast data across London
Skip the roaming charges
QR code emailed instantly

Start using unlimited data in London

How many days

More days, lower daily price

How many eSIMs

Buy more eSIMs, pay less

Total

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Get London eSIM

Set the eSIM up before you fly. The plan starts once you land in London and switch your eSIM on.

* The as low as figure is the lowest per-day rate, taken from the longest unlimited data plan on sale.

Secure Payment

London, United Kingdom eSIM travel illustration

Data that works all over London

Navigate London's streets on live maps, no dead spots
Call home on video from anywhere in London
Post photos and clips from London as it happens
Play music and podcasts on every London commute

Get 4G / 5G in London

Instagram

Google Maps

Spotify

Google Translate

TikTok

Set up data in London in 3 simple steps

No shop queue. No plastic SIM. Any eSIM-compatible phone will do.

Pick a plan

Take Unlimited or Fixed GB, then set the number of days you need in London.

Set up your eSIM

We email you a QR code. Scan it — under 2 minutes on any eSIM phone.

Online when you land

Switch the eSIM on once you land in London and you're online right away.

Why choose Onetel for London?

No roaming bill

One flat price, paid before you fly — no roaming bill waiting at home.

Your physical SIM stays in

Your home number keeps working. Two networks running side by side.

In your inbox within minutes

Your QR code lands in your inbox seconds after you pay.

Support answers any hour

Live chat and email, staffed around the clock.

Refund if it fails

Trip called off? Ask for a refund before you fly.

Quick setup

Open Settings, scan the code. No app, nothing technical.

🇬🇧

eSIM costs for London

Prices shown in USD

Duration	Data	Price	Per day
1 day	500 MB	$3.64	$3.64/day
3 days	—	$8.52	$2.84/day
5 days	—	$13.88	$2.78/day
7 days	100 MB	$19.24	$2.75/day
10 days	—	$27.30	$2.73/day
15 days	2 GB	$40.70	$2.71/day
30 days	3 GB	$80.96	$2.70/day
180 days	50 GB	$56.00	$0.31/day

Questions People Ask

The answers you need about your London eSIM

An eSIM is a SIM card in software, already sitting inside your phone. Rather than hunting for a shop at London airport, you scan a code at home and have data the second you land. Nothing to slot in, nothing to lose.

The payment goes through and the QR code hits your email, usually inside a few seconds. Install it straight away, or leave it in your inbox and set it up any time before the flight.

For most people heading to London, the Unlimited plan is the simple answer — maps, video calls home, photos uploaded, and no counting megabytes.

Yes. Coverage runs across the whole United Kingdom network, so other cities and regions are covered too, not only London and keep your current plan.

Yes. Data goes through the eSIM. Calls and texts still arrive on your physical SIM. Both run at once, nothing gets switched off.

That depends on the plan you pick. Unlimited plans usually allow tethering. The plan details spell it out before you pay.