Does it work on the London Underground?

It works wherever there's coverage. Many Tube lines, including the Elizabeth and Jubilee, now carry a mobile signal, and station platforms across the newer network have it. In older tunnels you may briefly lose data, so save your Citymapper route before boarding.

How much data do I need for a few days in London?

For a long weekend of maps, ride-hailing, social posts and restaurant bookings, most travellers find 3-5GB comfortable. If you stream video or tether a laptop, choose a larger plan. Remember this is a national UK eSIM, so it keeps working on day trips beyond London.

London eSIM.

Name: London travel eSIM
Brand: My Holiday SIM

From the South Bank to Shoreditch, stay connected across every London postcode and Tube line.

from $2.15/day · unlimited dataAll of United Kingdom →

Unlimited data5G where availableInstant QR by emailKeep your number

1 · How many days?

10 daysOther:days

2 · How much data?

3GBBest pricevalid 15 days$6.01$0.60/day

Cheapest plan covering your trip: 3GB, valid 15 days.

Travellers (one eSIM each)

1 × 3GB (valid 15 days) · 10-day trip$6.01

Good to know in London

Mobile coverage is now live on much of the Underground, including the Elizabeth, Jubilee and Northern lines, but older deep-level tunnels can still drop out - download your route offline before you head below ground.

Two simple ways to buy

London eSIM plans: unlimited, or by the GB.

Every London eSIM from My Holiday SIM is one of two straightforward types. Pick whichever fits how you travel in London — you can always top up or switch on your next trip.

Traveller streaming and browsing freely on an unlimited-data travel eSIM

Unlimited plans

High-speed data, nothing to count

Priced per day — the longer you stay, the better the daily rate. Ideal for streaming, hotspot and longer trips where you'd rather not watch a data meter. A fair-use policy keeps speeds fast for everyone; see each plan for the detail.

Best for streaming, video calls & hotspot
Great for longer or open-ended trips
One price per day — no GB anxiety

By-the-GB plans

3GB10GB20GB

A set bundle, brilliant value

A fixed data allowance (say 3 GB or 10 GB) valid for your travel days. The best-value pick for lighter trips built around maps, messaging and a bit of browsing. Running low? Top up in a couple of taps — nothing to reinstall.

Best value for lighter, shorter trips
Clear allowance — pay only for what you need
Top up any time from your phone

Compare plans →Not every destination has both types — the picker shows what's available where you're headed.

Plan your data

How much data do you need in London?

A rough, honest guide to sizing your London eSIM so you're not guessing. Most travellers in London are comfortable on 3–5 GB a week — heavy streamers just go Unlimited.

Traveller checking maps and messages on her phone using a My Holiday SIM eSIM

Not sure? Start with a 5 GB plan — you can top up in seconds if you run low.

Light

~1 GB / week

Maps, messaging & email

Google Maps, WhatsApp, email and the odd search. Plenty for a city break where you mostly need directions.

Suits 1–3 GB plans

Balanced

3–5 GB / week

Everyday holiday use

Everything above plus social scrolling, music, cloud photo backups and a little video. Where most travellers land.

Suits 5–10 GB plans

London eSIM: your local data guide.

London rewards the well-connected traveller: you'll want live data to decode the Underground map, hail a black cab or Uber, and pull up opening times for the British Museum or Borough Market. A London eSIM keeps Citymapper, Google Maps and your booking apps running from Heathrow arrivals to a late night in Soho.

One eSIM for London and all of United Kingdom. It's the national United Kingdom eSIM — from $2.15/day with unlimited data, working the same in London as it does the moment you leave it.

Landing at Heathrow Airport (LHR)?

Install the QR at home, then switch the eSIM on as you taxi in — you're online before you reach the arrivals hall.

London eSIM pricingbest-value plan · per day

Days

Per day

Total

Saving

3 days1GB

$1.04

$3.12

—

5 days1GB

$0.62

$3.12

−40%

7 days1GB

$0.45

$3.12

−57%

10 days3GBPopular

$0.60

$6.01

−42%

15 days3GB

$0.40

$6.01

−62%

30 days5GB

$0.23

$6.80

−78%

Each trip length shows the best-value plan that covers it. Total always shown before you pay.

eSIM vs the old ways in London

eSIM

ROAMING

AIRPORT SIM

Data allowance

Unlimited

Usually capped

Rarely unlimited

Price known upfront

Prepaid

Billed after

Varies at the desk

Ready when you land

Instantly

After the queue

Keep WhatsApp number

SIM swapped

London eSIM from $2.15/day — the whole bill, agreed before you fly.

On the ground

Where you'll lean on data in London.

Soho & Covent Garden

Data to compare last-minute West End theatre tickets and find a table in Soho's buzzing side streets.

The South Bank

Lean on maps to walk from the London Eye to Tate Modern and Borough Market without missing a turn.

Shoreditch

Ride-hailing and reviews come in handy hopping between Shoreditch's street-art lanes, markets and late-night bars.

Greenwich

Pull up train and DLR times, plus the Royal Observatory's schedule, as you cross to the meridian line.

The practical bit

Getting around London on your eSIM.

Apps you'll want online in London

Citymapper— Live Tube, bus and rail routing across London; needs data for real-time departures and disruptions.
TfL Go— Official Transport for London app for live Tube status and step-free planning.
Uber— Reliable ride-hailing citywide; the app needs data to book, track and pay.
Trainline— Buy UK rail and day-trip tickets; mobile tickets and live times need data.

How long to stay in London

Most visitors stay three to five days in London, enough for the big museums, a West End show, a couple of neighbourhoods and perhaps one day trip.

How much data for London

London means constant map-checking, live transit and ticket QR codes, so a balanced 3-5 GB suits most trips; choose Unlimited if you'll stream on the go or tether a laptop.

Coverage in London

5G and 4G are strong across central London, the airports and mainline stations; the deep Tube tunnels historically dropped signal, though TfL's ongoing rollout now covers many Underground sections rather than all.

Where you're headed

Discover London.

London, United Kingdom — skyline and landmarks · stay connected with a London eSIM from My Holiday SIM

London, United Kingdom — streets and everyday scenes · stay connected with a London eSIM from My Holiday SIM

London, United Kingdom — sights worth exploring · stay connected with a London eSIM from My Holiday SIM

London, United Kingdom — a travel moment · stay connected with a London eSIM from My Holiday SIM

How to activate your London eSIM.

Full installation guide →

A traveller happily planning her next trip with a map and phone

Buy your plan

Choose your days — the QR code arrives by email in seconds.

A traveller installing her eSIM from the sofa in two minutes

Install at home

Scan the QR on Wi-Fi before you fly. About two minutes, no app needed.

Friends laughing together while packing for a holiday

Fly relaxed

Nothing counts down yet — your days start only at first connection.

A joyful family reunion at the airport arrivals hall

Switch on in London

Turn the line on when you land. Connected before baggage claim.

New to eSIM in London?

What is a London eSIM?

A London eSIM is a digital SIM that's already built into your phone. Scan one QR code and a local London data plan installs alongside your home SIM — no plastic, no tray tool, no swap. Your number and WhatsApp stay exactly where they are.

✓ 2-minute install✓ Keep your number✓ Works on phones from 2018+

How eSIM works →Check my phone

A traveller with a backpack smiling at her phone — online abroad with My Holiday SIM

Connected · 5G

Home SIM · calls & WhatsAppHoliday eSIM · unlimited data

30-day refund promiseUnused, uninstalled eSIM? Full refund, no questions.

The price is the billPrepaid and final — roaming charges can't happen.

Days start when you landInstall early with zero pressure; counting begins at first connection.

Humans, 24/7Real people answer, before, during and after the trip.

Peace of mind

Your London eSIM: data-only, zero bill shock.

Your London eSIM handles the internet while you travel. Your home number stays exactly where it is — no surprise roaming charges in London, no swapping your real SIM out.

Keep your number & WhatsApp

The eSIM is data-only and runs alongside your home SIM. Your number, iMessage and WhatsApp keep working exactly as they do at home.

No roaming bills, ever

Turn data roaming OFF on your home SIM and ON for the eSIM. You pay once, up front — no overage, no metered surprises, no bill waiting when you land home.

One thing worth knowing

Because it's data-only, the eSIM can't receive bank verification (OTP) text codes — those still go to your home number. Keep it reachable on Wi-Fi calling, or use app-based codes.

Traveller relaxed and connected on her phone, no roaming bill to worry about

Why travellers choose My Holiday SIM for London.

Instant eSIM deliveryQR code in your inbox seconds after checkout — even at the departure gate.

No physical SIMNothing to collect, lose or poke out with a paperclip. Your home SIM stays put.

Keep your WhatsApp numberData flows through us; WhatsApp stays on your home number. Family always reaches you.

A traveller at the departure gate, eSIM ready on her phone

eSIM ready in ~2 minutes

No bill shock, everOne clear price before you fly. Roaming charges simply can't happen.

Secure paymentsCards, Apple Pay, Google Pay, PayPal and Klarna — encrypted end to end.

Real human supportReal people — before, during and after your trip. Live chat and email, no bots. Easy top-ups too.

Coverage in United Kingdom.

5G where available, fast 4G everywhere else

Connected · 5G

Your eSIM joins United Kingdom's partner networks automatically — no settings to choose, no manual network hunting. If signal drops in a remote spot, toggling Airplane Mode for a few seconds forces a fresh connection.

EE
O2
Vodafone UK
Three

Popular places covered

LondonEdinburghManchesterLiverpoolBathYorkCardiffBelfast

Keep data roaming ON for the eSIM line only — that's the switch travel eSIMs use, and it never adds charges on our plans.

Trusted networks, honest numbers.

No invented star ratings behind your London eSIM — just the numbers we actually stand behind.

Friendly globe with location pins — coverage on every continent

My Holiday SIMSTAY CONNECTED. ANYWHERE.

200+

destinations — every continent covered

regions covered by a single regional eSIM

~2 min

typical install — QR to connected

Live

chat & email support

Before you fly

London eSIM questions, answered.

Yes. Install and activate before you fly, then connect the moment you land at Heathrow, Gatwick or any London airport. It runs on the UK's major networks such as EE and Vodafone, so you'll have data at baggage reclaim and for booking your ride into town.

Your London eSIM glossary.

eSIMA SIM built into your phone's hardware. Plans install onto it digitally — no plastic card involved.

QR profileThe code we email you. Scanning it downloads your holiday plan onto the eSIM. One scan per device.

Data roaming (the switch)The toggle travel eSIMs use to join partner networks abroad. On our plans it never adds charges — keep it ON for the eSIM, OFF for your home SIM.

Hotspot / tetheringSharing your phone's data with laptops and tablets. Included on our plans wherever networks allow.

Top-upExtra days added to a live plan from your account. They append to the end — nothing overlaps.

First connectionThe moment your eSIM first joins a network at the destination — that's when your days start counting, not before.

Travelling wider in United Kingdom?