Planning a trip to London and flying to London Gatwick Airport and wondering if you can buy a prepaid sim card at the airport?

Avoid high roaming charges and slow overseas data roaming plans. This is a complete guide with everything you need to know before buying a tourist sim card at London Gatwick Airport.

Find out where to buy a sim card, up to date prices as per January 2025, my recommendation and experiences on arrival, info about UK eSIMs and more.

In the past I always used to buy a prepaid sim card in every country, nowadays I mostly use eSIMs to stay connected.

Traveltomtom also wrote related sim card guides on how to buying a prepaid sim card in the UK in 2025 and a comparison of the best eSIMs for the UK in 2025.

Table of Contents

Some links in this article about the best sim cards at London Gatwick Airport are affiliate links, which means I earn a small percentage in case you decide to purchase something after clicking on an affiliate link. This is at absolutely no extra costs to you!

My recommendation

Traveltomtom recommends ordering an eSIM on the internet over buying a prepaid sim card on arrival at London Gatwick Airport. eSIMs are simply cheaper!

The best value tourist sim card at London Gatwick Airport gives you only 10 GB data for around $25 USD. You can get them from a vending machine or in the WH Smith convenience stores.

On Sim Local you can order an eSIM for the UK with 100 GB data for just $25 USD. A Jetpac eSIM gives you 10 GB for just $11 USD.

Check out my article why EE eSIMs are the best value eSIMs for traveling to the UK. Other recommended eSIM providers for the UK are: Airalo or SimOptions, etc.

Traveltomtom wrote a complete guide for the best eSIMs for traveling to the UK in 2025.

Prepaid sim cards for the UK are more expensive at Gatwick Airport than in a phone store in London city center. Check out my guide for buying a prepaid sim card for tourists in the UK in 2025 with more info including the best 4G/5G network in the UK.

Why buying a sim card for the UK

While there is WiFi everywhere you don't really need a sim card is what a lot of people say. Yes in an ideal world, but don't rely on WiFi in the UK. Although most restaurants, bars and hotels have free WiFi, it is no guarantee.

Having a working data connection on your phone also makes traveling to the UK so much more convenient and safer! What about emergency situation when on the road, getting directions from Google Maps, checking your online banking apps, finding nearby restaurants or order a taxi through an app? Trust me you will like being connected when traveling to the UK.

As I am trying to visit every country in the world I constantly fly all around the world in search for new adventures. Since I like to document all my travel tips you can already find more than 200 sim card guides on Traveltomtom from all around the world: New York, Miami, Newark, Mexico City, Costa Rica, Bogota, Paraguay, Dominican Republic, Europe, Dublin, Barcelona, Milan, Riyadh, Muscat, Tel Aviv, Cairo, Hong Kong, Bangkok and many more.

On Traveltomtom you can also find guides for buying a UK sim card at London Stansted and London Luton Airport as well about buying a sim card at London Heathrow and Manchester Airport.

So next time when you are planning your next adventure abroad come check out Traveltomtom for the latest prepaid and eSIM advice for your destination. Bookmark me!

UK sim cards and EU data roaming

Since 2017 the EU banned roaming fees within the European Union, but after Brexit the UK is officially not a member of the EU anymore.

The UK mobile internet providers changed the EU roaming rules and charge a daily fee for using your UK sim card in other parts of Europe. Read more about it in my article about the best way to stay connected when traveling to the UK or find out everything about EU roaming in my guide for buying a local prepaid sim card in Europe.

There are sim cards which you can use in all of the EU including Switzerland, Norway and the UK. Check out my comparison of the best sim cards for traveling in Europe in 2025 and find the one that suits your trip.

Arrival at London Gatwick

There are 4 airports in London so make sure you are looking at the right airport for buying a UK sim card. London Gatwick Airport is located about 40 minutes South of London. It is mostly European flights that arrive here, but there are also some intercontinental flights arriving at London Gatwick Airport as well. LGW Airport can easily be reached by train from London city center.

South and North Terminal

gatwick airport terminals

Most intercontinental flights from Middle East and Caribbean are arriving at the North Terminal and flights from Turkey, USA, Africa and Asia are mostly arriving at the South Terminal. For buying a sim card at London Gatwick Airport there is no difference at which terminal you arrive. They sell the exact same UK prepaid sim card plans at both terminals at the exact same places.

Where to buy a sim card at London Gatwick Airport

gatwick airport sim card vending machine

Unlike many international airports there are no mobile internet operator stores at London Gatwick Airport. At London Gatwick Airport you can only buy a UK sim card at a vending machine or at one of the WH Smith shops, a convenience store.

gatwick airport sim card

The vending machines selling UK sim cards for tourists can be found at baggage claim in both the South and the North terminal at London Gatwick Airport. The WH Smith stores are also located in both terminals, but in the Arrival Hall and can't be missed!

At the WH Smith shops you can expect some kind of service, however staff is busy selling drinks and snacks to travelers as well, so don't expected to be treated like a king. The sim card vending machines actually gives pretty detailed information about the prepaid UK sim cards they are selling.

There are 5 different mobile internet providers in the UK: EE, O2, Three, Vodafone and Virgin. At London Gatwick Airport they do not sell O2 and Virgin sim cards, but instead they sell Lebara Mobile and Lycamobile sim cards.

Sim cards from vending machines

uk prepaid sim card comparison

The vending machine sell the following prepaid UK sim cards: Vodafone, Lycamobile, EE and Three.

Vodafone

vodafone sim card london gatwick

  • 9 GB data + 200 minutes + unlimited sms in the UK for 30 days = £20 - $24 USD

When you see the other available UK sim cards at London Gatwick Airport Im sure you will understand that buying a Vodafone UK sim card is not the best option for tourists.

Three

uk sim card three

  • 12 GB data + unlimited calls/sms in the UK for 30 days = £30 - $37 USD

Your data that comes with a Three sim card is valid all over Europe and Australia, Canada, Hong Kong, New Zealand and USA.

EE

ee uk sim card for tourists

  • 10.5 GB data + 150 minutes + 150 sms for 30 days = £20 - $24 USD
  • 13 GB data + 250 minutes + 500 sms for 30 days = £25 - $30 USD

Lycamobile

prepaid sim card lyca mobile uk

  • 6 GB data + 3,000 minutes + 100 sms for 30 days = £25 - $30 USD
  • 15 GB data + unlimited minutes/sms + 100 international minutes for 30 days = £35 - $43 USD

Lycamobile is an MVNO and uses the network of O2 in the UK.

Evaluating all the above available UK sim cards from the vending machines I can easily advice you not to buy a Vodafone UK sim card. To me the best UK sim card at the vending machine is the EE sim card. I don't really call or text so I would not even use the 150 minutes and 150 texts, but the 10.5 GB for £20 GBP ($24 USD) is good value for money.

Sim cards at WH Smith

prepaid sim cards london gatwick airport

The WH Smith shops at London Gatwick Airport sell EE, Three and Lebara Mobile sim cards. They offer a wide range of prepaid sim cards for the UK.

EE sim card

prepaid sim card uk ee

WH Smith shops offer the exact same EE sim cards as the sim card vending machines.

Three sim card

three uk prepaid sim card

They also offer 3 different Three UK sim cards for £20, £30 and £45 GBP. The packages are slightly different than the prepaid sim card vending machine All of these packages offer you 3000 UK minutes and 3000 UK texts. The difference is the data bundle: 1GB, 12GB and Unlimited data. So for £45 ($55 USD) you have unlimited 4G internet for 1 month.

The Three sim card at the vending machine gives you unlimited text and calls within the UK, the Three sim card at the WH Smith shop is limited to 3000 minutes and calls, for what it's worth!

Lebara

prepaid sim card lebara mobile uk

  • 1 GB data + 500 international minutes to 41 destinations + 500 UK minutes + £2 credit = £20 - $24 USD
  • 5 GB data + unlimited international minutes to 41 destinations + unlimited UK minutes + 1,000 sms + £5 credit = £30 - $37 USD

If you have read my Spain sim card, Netherlands sim card or France sim card articles, you would already know that I am not much a fan of Lebara Mobile. No competitive prices!

Lebara sim cards are a hard no-go when you are looking for a European sim card for tourists.

Best sim card at London Gatwick Airport

The WH Smith shops at London Gatwick Airport sell pretty much the same sim cards as the sim card vending machines. The conclusion of my comparison is that EE is the best sim card at London Gatwick Airport in 2025.

With an EE sim card you get 10.5 GB data for £20 GBP ($24 USD) and you get 150 minutes and sms to use in all of Europe.

But on Sim Local you can order an eSIM for the UK with 100 GB data for just $25 USD and a Jetpac eSIM gives you 10 GB for just $11 USD.

Check out my article why EE eSIMs are the best value eSIMs for traveling to the UK. Other recommended eSIM providers for the UK are: Airalo or SimOptions, etc.

eSIMs are the easiest way to get connected when traveling to the UK and therefore Traveltomtom wrote a complete guide with everything you need to know before ordering an eSIM for the UK in 2025.

On a trip to visit more countries in Europe? Then check out the best prepaid sim cards for traveling to Europe in 2025.

Best eSIMs for the UK

eSIMs are the most convenient and easiest way to stay connected when traveling to London in 2025. No more visiting a sim card store or swapping physical sim cards. You arrange everything online within just a couple minutes.

You order an eSIM for the UK on the internet, you receive a QR code, scan it, follow the simple steps and within less than 2 minutes you have a UK eSIM installed on your phone.

Upon arrival in London it automatically connects you to an available network and you enjoy data on your phone pretty much when the plane lands.

For all FAQ's about using eSIMs when traveling to the United Kingdom click on the link to read my detailed guide.

There are several eSIM providers, here is a selection.

Sim Local

As mentioned several times throughout this guide we recommend getting an EE eSIM for the UK via Sim Local. They have the best deals for tourists.

ee esims for uk sim local

Here are the amazing eSIM deals:

  • 30 GB data + unlimited calls/sms for 30 days = $19 USD
  • 100 GB data + unlimited calls/sms for 30 days = $25 USD
  • 200 GB data + unlimited calls/sms for 30 days = $38 USD
  • Unlimited data/calls/sms for 30 days = $50.50 USD

Click here to order an EE UK eSIM via Sim Local.

Keep in mind that these eSIMs are only valid in the UK, there is NO free EU data roaming included.

Airalo

Airalo offers multiple data-only eSIMs for traveling in the UK and Traveltomtom has used Airalo lots of times without any problem.

Check out the Airalo eSIM deals for the UK in 2025:

  • 1 GB data for 7 days = $5 USD
  • 2 GB data for 15 days = $7.5 USD
  • 3 GB data for 30 days = $10 USD
  • 5 GB data for 30 days = $15 USD
  • 10 GB data for 30 days = $22.5 USD
  • 20 GB data for 30 days = $36 USD

Click here for more info or to directly order an eSIM for the UK via Airalo.

The above Airalo eSIMs for the UK are from Uki Mobile and are data-only. Calling and texting is NOT supported. The data allowance is only valid in the UK, there is no free EU roaming with these eSIMs. They operate on the 4G/LTE networks of O2 and Three.

SimOptions

If you are looking for eSIMs for the UK that also work in other countries in the EU then Traveltomtom recommends to check out SimOptions as they have UK eSIMs including free EU data roaming.

Traveltomtom has used SimOptions all over the world and called it a marketplace for eSIMs. Read more about it in our complete SimOptions review.

The international eSIMs from Orange and Bouygues Telecom are also rated as the best eSIMs for traveling to Europe in 2025.

simoptions esims for united kingdom

Bouygues Telecom

  • 15 GB data-only for 15 days = $15.90 USD
  • 20 GB data + unlimited calls for 15 days = $21.90 USD
  • 30 GB data + unlimited calls for 30 days = $32.90 USD
  • 60 GB data + unlimited calls for 30 days = $39.90 USD

Orange Holiday Europe

  • 12 GB data + 30 minutes international + unlimited calls/text for 14 days = $28.90 USD
  • 30 GB data + 120 minutes international + unlimited calls/text for 14 days = $49.90 USD
  • 70 GB data + 120 minutes international + unlimited calls/text for 28 days = $55.90 USD

Click here to order an international eSIM for the UK via SimOptions or find more info in the link.

Before ordering an eSIM for the UK make sure your phone is unlocked and eSIM compatible.

For more UK eSIM offers and much more details check out my comparison of the best eSIMs for the United Kingdom in 2025 with an answer to all FAQ about using eSIMs.

Order a prepaid sim card for the UK online

If your phone is not eSIM compatible but you would like to order a sim card for traveling to the United Kingdom online before your trip then check out the following.

Arrive prepared for your trip to London with an international prepaid sim card. You order them online and a physical prepaid sim card will be delivered to your home address. You put this sim card in your phone and it automatically connects to an available network upon arrival in London, basically when the plane lands you are instantly online.

international prepaid sim cards for traveling to uk

SimOptions offers the following international prepaid sim cards for the UK:

  • 15 GB data-only for 15 days = $15.90 USD
  • 20 GB data + unlimited calls for 15 days = $21.90 USD
  • 10 GB data + $2 calling credit for 30 days = $24.90 USD
  • 10 GB data + unlimited calls/sms for 30 days = $24.90 USD
  • 12 GB data + 30 minutes international + unlimited calls/text for 14 days = $29.90 USD
  • 30 GB data + unlimited calls for 30 days = $44.90 USD
  • 30 GB data + 120 minutes international + unlimited calls/text for 14 days = $49.90 USD
  • 60 GB data + unlimited calls for 30 days = $51.90 USD

Click here to order an international sim card for traveling to the UK via SimOptions.

Also a last reminder that if your phone is eSIM compatible you can order an eSIM for the UK on the internet and arrange everything within a couple clicks.

For more info about using eSIMs in the UK check out my complete guide for buying an eSIM for traveling in the United Kingdom in 2025.

How to get from London Gatwick Airport to London City Center

There are multiple coaches connecting Gatwick Airport with London city, but the best way to travel to London is by train. You can't miss the signs for train station all over Gatwick Airport. They will lead you to the South Terminal. Buy your ticket at one of the vending machines or you wireless payment on your credit card or debit card. If not sure ask one of the helpful staff guiding you in the right direction!

This is the ticket machine for buying tickets from London Gatwick to London city. There are a ton of options, pretty confusing, so I always ask some of the staff to help me.

how to get from gatwick airport to london 3

There are express trains that take you directly to the city and in off-peak hours it will only cost you £8.30 if you buy an Oyster Card or simply tap on with your credit or debit card.

how to get from gatwick airport to london 1

Most of the times Im buying a day pass for the London public transport for around $20 USD, which allows me to take the Underground and busses in London till 04.00am the next morning. Definitely a good ticket to buy when you want to reach the hotel and explore London directly after.

how to get from gatwick airport to london 4

I am sure some of the above information about buying a prepaid sim card at London Gatwick Airport was helpful for your upcoming trip to London.

If you have any specific question then please leave me a comment below.

For more detailed info about UK prepaid sim cards check out Traveltomtom's comparison of the best UK sim cards for tourists in 2025. Find out which mobile internet provider has the best 4G/5G mobile data network coverage in the UK.

Curious what it looks like trying to visit every country in the world? Go check out my Instagram account @traveltomtom and follow along. As of January 2025 I have visited more than 155 countries, so still a long way to go.

Enjoy your trip to London!