London eSIM

What eSIM keeps London airport transfers and sightseeing simple?

For a London break built around Tube journeys, theatre bookings and walking maps, AloOui UK eSIM begins at $3.54 USD for 1GB over 7 days. Pick fixed 5GB for lighter use, Essential for daily exploring, or Plus for laptop sharing; a separate selectable package adds a UK number, calls and SMS.

Compare all UK eSIM plans for London

Choose between fixed data, standard Unlimited, Essential and Plus packages, and selected UK-number packages with calls and SMS. A data-only plan does not include a local phone number simply because it connects to a UK mobile network.

Fixed data (8)

Package and duration Price USD
100GB 30 Days $109.41
1GB 7 Days $3.54
2GB 15 Days $5.26
3GB 30 Days $6.40
5GB 30 Days $9.83
10GB 30 Days $17.11
20GB 30 Days $29.87
50GB 30 Days $56.10

Data with UK calls and SMS (7)

Unlimited standard (6)

Unlimited Essential (7)

Unlimited Plus (7)

Prices retrieved from the UK product listing on 31 October 2026. Confirm each variant's full-speed allowance, reduced-speed conditions, calls/SMS entitlement, validity and current price before checkout. Unlimited does not automatically mean unlimited full-speed data.

Prices may change. Always check the product page for the latest prices.

Essential and Plus reset their high-speed allowances daily; fixed data is one total pool. Supported networks include Three UK, O2 UK and Vodafone UK, with 4G/5G where available. Follow your selected package’s network instructions.

Big Ben and the Houses of Parliament for AloOui London eSIM travel

Choose your allowance

  • Light use: fixed 5GB for maps, messages and bookings.
  • Daily maps and social apps: Essential for a refreshed daily allowance.
  • Heavy use and hotspot: Plus for laptop sessions and uploads.

From London’s airports to your hotel

At Heathrow Airport, compare the Elizabeth line, Piccadilly line and Heathrow Express for the station nearest your accommodation. Heathrow Express runs to Paddington; save the onward hotel route too. From Gatwick Airport, compare trains toward Victoria or Thameslink destinations with your actual hotel location. Stansted Express links Stansted Airport with Liverpool Street. Download your chosen ticket and check current service information before leaving the terminal, especially for late arrivals.

Tube, buses and four sightseeing stops

The London Underground, Elizabeth line, London Overground and red buses connect different parts of the capital. Save your interchange and exit station before descending: mobile signal can dip in tunnels, and indoor reception varies. Bus journeys can help you follow street-level landmarks, but keep the final walking route downloaded rather than relying on a continuously refreshing map.

  • Westminster: download your Parliament Square and riverside walking route before photographing Big Ben; leave large video uploads for later.
  • South Bank: save timed attraction tickets as screenshots and mark your meeting point along the river before separating from companions.
  • Soho: keep the theatre’s exact entrance and reservation confirmation ready, rather than navigating only to its postcode.
  • Camden Town: save the market meeting point and return station before exploring, so everyone has the same destination on their phone.

London-only planning tip: for a West End show, save both your theatre door and the route back to your accommodation before the curtain rises. Keeping these beside your ticket avoids juggling email, maps and booking apps on a busy pavement after the performance.

Set up in five steps

  1. Check your exact device supports eSIM and is carrier-unlocked.
  2. Buy your package and install the emailed QR code over Wi-Fi before departure.
  3. In the UK, select AloOui for mobile data and enable roaming on that line. Validity begins on a supported UK network connection.
  4. If needed, check your balance and emailed APN instructions, then toggle airplane mode. Keep the eSIM installed.
  5. For support, visit our Help Center.

UK number or onward Europe?

Compare UK Prepaid with a UK number for UK-only activation and use. Choose Europe+ for a supported multi-country itinerary.

London eSIM FAQs

Which eSIM should I buy for London?

The AloOui UK eSIM, from $3.54 for 1GB over 7 days. Choose the $12.60 package if you need a UK number.

Can I use WhatsApp and install before flying?

Yes. Install on Wi-Fi before you fly; the plan starts when you connect in the UK. Data plans work with WhatsApp and FaceTime.

Which rail options should I save before landing at Heathrow?

Compare the Elizabeth line, Piccadilly line and Heathrow Express against your hotel address. Save your chosen connection and onward route before leaving airport Wi-Fi.

Does it work on the Tube?

Yes, on Three, O2 or Vodafone across London. Signal can dip in tunnels, so save your interchange and exit station before boarding.

What should I download for a West End theatre evening?

Keep your ticket, theatre entrance and after-show route to your accommodation available offline before the performance.

How can I keep South Bank tickets handy without mobile reception?

Save permitted ticket screenshots or offline copies before arriving, following the attraction’s entry instructions, and keep your riverside meeting point alongside them.

Does the $12.60 London option include a UK telephone number?

Yes. That selectable package includes a UK number, 1GB for seven days, 20 minutes and 20 SMS; the other linked data-only packages do not include those allowances.

What should I choose for working from my London accommodation?

Plus provides 2GB of high-speed data daily, then up to 2Mbps. Hotspot on supported devices uses that same allowance, so include laptop uploads in your estimate.

Continuing around Europe?

Paris · Rome · Amsterdam.

Get the AloOui app

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Download AloOui for London eSIM travel on the Apple App Store Download AloOui for London eSIM travel on Google Play

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Choose your UK eSIM for London

Practical London travel tips for eSIM users

Arriving and finding your accommodation

From Heathrow, compare Elizabeth line, Piccadilly line and Heathrow Express based on your actual destination rather than choosing the fastest airport-to-centre service.

Using maps and mobile data locally

Save the nearest Underground exit and check whether your route needs a bus or short walk. For museums or West End shows, keep booking confirmations available offline.

Day trips and connectivity planning

For Windsor or Oxford day trips, verify your train operator, station and return service.

Before departure

Check that your phone is eSIM-compatible and unlocked. Read the chosen plan’s activation, hotspot and full-speed data conditions, save offline maps and your hotel address, and review possible charges from your usual mobile line.

Plan your onward route and longer stay

Match every country, your full active travel period and expected data use. Compare country, regional and Global options around the complete journey.