UK SIM card: prices, networks and the best option in 2026

Do you need to buy a SIM card for England? Not necessarily, but you should at least check what your plan covers. Since Brexit, the United Kingdom is no longer one of the countries covered by the EU "roam like at home" scheme. According to the official European Union portal, the scheme covers EU countries, the European Economic Area (Iceland, Liechtenstein, Norway), Moldova and Ukraine. Other countries are not included.

In practice, each carrier decides on its own whether to include England in its plans. Some do, often with a smaller data allowance. Others charge you from the very first megabyte. If you use your phone without checking, the bill can climb fast.

Buying a SIM card in England (or an eSIM) makes sense in three cases:

• your plan doesn't include the UK, or only with very little data;
• you need a lot of internet while you're there (Google Maps, social media, video calls, hotspot);
• you're staying several weeks, as a student, for an internship or for work.

The United Kingdom is made up of England, Scotland, Wales and Northern Ireland. A UK SIM card works everywhere in the country, on its carrier's network.

Which SIM card should you choose for England? It comes down to three things: how long you're staying, how much data you need, and whether your phone is compatible. There are three main types of solutions.

A local SIM card, or British SIM card, is sold by a UK carrier (EE, O2, Vodafone, Three, giffgaff, Lebara, Lyca Mobile). It gives you a UK number and a large amount of data for 30 days. The catch: you have to get it locally or have it delivered to a UK address, then swap out your usual SIM card.

A travel SIM card is a physical card sold by a reseller, often online or on Amazon, that you receive before you leave. Handy, but it's still a chip to insert, with a delivery delay.

A travel eSIM is a digital profile you download to your phone, a tourist eSIM designed for short stays. No card to receive or insert: you install it in a few minutes before you leave, and your usual number stays active on your physical SIM card.

Before choosing, check that your smartphone supports eSIM: most recent iPhone models, Samsung Galaxy and Google Pixel phones are eSIM compatible, as are many iPad models. Our article on how to check if your phone is eSIM compatible shows you how in a few seconds.

Which carriers offer SIM cards in England? Four carriers own their own mobile network in the UK: EE, O2, Three and Vodafone. Around them, budget carriers rent space on their masts. They all sell no-contract prepaid SIM cards, called "pay as you go" (PAYG): you pay for your plan for 30 days, with no contract. EE SIM card, Vodafone SIM card, Three or O2 SIM card: here's what the country's best carriers offer.

EE

EE (BT group) is the country's top-ranked network in independent tests (see below). Its 30-day prepaid plans range from 20 GB for £10 up to unlimited data for £35, with calls and texts. One detail to watch: on prepaid, speed is capped at 25 Mbps according to EE's official page. That's enough for browsing and watching videos, less so for heavy downloads.

O2

O2 sells its prepaid plans as Big Bundles: from 8 GB for £10 to 125 GB for £30 over 30 days, with unlimited UK calls and texts. Unused data rolls over to the next month. O2 also lets you use your plan in its Europe zone, up to 25 GB, which is handy if you're heading on to another European country.

Three

Three runs one of the country's four networks. It's known for big prepaid data allowances and its unlimited data plan. It's also one of the two networks used by voilà eSIM in the UK, alongside EE.

Vodafone

Vodafone offers its "Pay as you go Plus" plans: £10 to £40 for 30 days, up to unlimited data. Until December 8, 2026, the £10 plan gives you 27 GB for 3 months, then 8 GB. Vodafone sends its SIM card for free and also offers its plans as an eSIM.

What is the best mobile network in England?

Independent tests all name EE as the best mobile network in the UK. In its January 2026 report (measurements from October to December 2025), Opensignal gives it 11 awards, including reliability (915 points out of 1,000) and the highest download speed across all connections: 53.2 Mbps, ahead of Three (51 Mbps), Vodafone (37.5 Mbps) and O2 (32.8 Mbps). EE also has the best 5G availability (77.4% of the time). RootMetrics (Ookla) agrees: in its first-half 2026 study, EE wins its 26th consecutive title as the country's best network, the best 5G experience and every award in the 16 major cities tested.

Three comes right behind: it's the network with the fastest 5G according to Opensignal (187 Mbps on average), and second for overall speed. O2, for its part, wins the coverage category at Opensignal.

These are exactly the two networks voilà eSIM runs on in the UK: EE on 5G and Three on 4G. So you get the country's best-rated network, without visiting a store.

Cheap UK SIM card: giffgaff, Lebara and Lyca Mobile

If you're looking for a cheap SIM card, virtual carriers are the most affordable:

• giffgaff uses the O2 network and sells no-contract monthly plans.
• Lebara offers plans from 5 GB for £5 to unlimited data for £30 a month.
• Lyca Mobile lists discounted prices from £3.50 (5 GB) to £12.50 (unlimited data) for 30 days.

These deals are worth it if you're staying a long time, especially as a student. For a short trip, you still have to get the card and activate it with a 30-day plan.

How much do SIM cards cost in England? Here's a comparison of the main carriers' prepaid plans, next to voilà eSIM. Prices in pounds are converted to euros at the European Central Bank reference rate of October 23, 2026 (€1 = £0.83728). voilà eSIM prices are shown in dollars.

The data in this table was checked on October 26, 2026 on the official pages of EE, O2, Vodafone, Lebara, Lyca Mobile and voilà eSIM.

What stands out: over 30 days and with lots of data, a prepaid UK SIM card costs little per GB. But you always pay for a full month, even for three days in London, and you have to get hold of the card. voilà eSIM starts at $1.20, is bought online and works as soon as you land.

How much does a SIM card cost in England depending on the length of your stay?

Here's what you pay depending on your trip, with prices checked on October 26, 2026:

• A weekend in London (3 days): $1.20 for 1 GB over 7 days, or $3.10 for 3 GB over 15 days with voilà eSIM. The cheapest SIM card in the table, Lyca Mobile, costs £3.50 (€4.18) for 5 GB over 30 days, plus the time it takes to find one.
• One week: $4.90 for 5 GB over 30 days or $8.80 for 10 GB over 30 days with voilà eSIM. At EE, O2 and Vodafone, the entry plan costs £10 (€11.94).
• A month or more: if you use more than 20 GB, a local SIM card becomes worth it. Example: 20 GB for £10 (€11.94) at EE, versus $16.80 for 20 GB with voilà eSIM. In return, the eSIM saves you a trip to the store and keeps your usual number active.

Where can you buy a SIM card in the UK? You have three options: the airport, shops in town and online. Good news: in the UK, you can usually buy a prepaid SIM card without ID, unlike in many countries.

Buying a SIM card at Heathrow airport

At Heathrow airport, SIM card stores and vending machines are set up in the terminals, including those of Sim Local, a specialist reseller. A tourist SIM card is available as soon as you get off the plane. It's the fastest solution if you land without a connection, but also the most expensive: airport SIM cards often come with a pricier plan than in town or on the carrier's website. Check the price table before you pay.

Buying a SIM card at St Pancras International station

If you arrive by Eurostar at St Pancras International, you step off the train right in central London. The easiest move is to have your connection ready before you board: you avoid hunting for a store with your bags, and you can book a taxi or open your route right on the platform. An eSIM installed before you leave does exactly that.

Buying a SIM card at the supermarket or in a store

In town, a supermarket SIM card is the most common solution: big chains, newsagents and electronics stores sell SIM cards from several carriers. You can also walk into an EE, O2, Three or Vodafone store, where staff will help you pick a plan and activate your card. Corner shops often sell Lebara and Lyca Mobile cards. So a SIM card in London is easy to find, as long as you take the time to compare.

Buying a SIM card online before you leave

UK carriers sell their SIM cards online, but most only deliver to a UK address. For a tourist, the real online option before you leave is the eSIM: you buy it from home, you get your QR code by email or in the app, and you're all set.

How do you activate a SIM card in England? The process depends on the type of card.

To activate a physical UK SIM card:

1. Check that your phone is carrier-unlocked. Otherwise, it will reject the card.
2. Turn off your phone, remove your usual SIM card and insert the UK card.
3. Turn the phone back on: it connects to the carrier's network.
4. Buy or top up your plan on the carrier's website or app by creating an account (pay by credit or debit card, or with credit bought in store).
5. If you have trouble connecting to the internet, check your mobile data settings and the APN given by the carrier.

Using an eSIM is simpler:

1. Check that your smartphone is eSIM compatible.
2. Buy your plan online, then scan the QR code or install the eSIM profile straight from the app.
3. When you arrive, turn on mobile data and data roaming on the eSIM line. Your usual number stays available for calls and texts.

Our article on how to install an eSIM walks you through every step on iPhone and Android.

Can you use your usual mobile plan in England? Yes, as long as your carrier has included the UK in its destinations. Since the country is no longer subject to EU roaming rules, nothing forces your carrier to let you use your plan like at home. It's a commercial choice, which can vary from one plan to another.

Before you go, check three things:

• is the UK on your plan's list of included countries?
• how much data can you use there, and how much does it cost beyond that?
• are calls and texts to UK numbers included?

Roaming charges in England with your carrier

Carriers don't all treat the UK the same way, and terms vary by plan. On some plans, England is included with a smaller data allowance. On others, usage is charged as roaming.

The thing to do: check your account or your plan's price sheet, under "international". You'll find the list of included countries and the data allowance. If the UK isn't on it, turn off data roaming as soon as you arrive and switch to a travel eSIM.

For most travelers, the eSIM is the most practical alternative to a SIM card in England, and eSIM technology is now built into most recent smartphones. An eSIM card isn't a card at all: it's a digital profile your phone downloads, which connects to a local network. You install it at home, and you're online as soon as your plane touches down.

Here are the advantages of an eSIM in England:

• Ready before you leave: no store to find, no line at the airport.
• Your number stays active: your usual SIM card stays in the phone to receive calls and texts, handy for your bank's codes.
• A plan that fits: 7, 15 or 30 days, from 1 to 50 GB, instead of a mandatory 30-day plan.
• Hotspot: your phone becomes a hotspot to share your data with a laptop or tablet.

And its limits, to be fair: voilà eSIM is data only, with no UK number or texts. To call, you use WhatsApp, FaceTime or Telegram. And your phone must be eSIM compatible.

With voilà eSIM, you get excellent value for money: 1 GB for $1.20, 5 GB for $4.90 or 20 GB for $16.80, at the listed price, with no subscription or auto-renewal. The eSIM is easy to install and the app is easy to use, to buy, activate and track your usage. If you have a question, human customer support answers you 24/7, and you can use the same app for more than 190 destinations worldwide. Once there, your plan runs on the EE (5G) and Three networks. All plans are on our eSIM for the United Kingdom page.

Comparison of eSIMs for England in 2026

Here are the prices of the main travel eSIMs for the UK, checked on October 26, 2026 on each provider's website (Saily and Airalo prices were recorded in euros):

Across the plans compared, voilà eSIM is the cheapest: more than 3 times cheaper on 1 GB and nearly 2 times cheaper on 20 GB. Holafly only sells unlimited data plans in the UK: €3.90 for one day, €25.50 for 7 days or €70.90 for 30 days. That's useful if you use a huge amount of data, but for normal use, a 5 or 10 GB plan works out much cheaper.

What's the difference between an eSIM and a SIM card in England? A physical SIM card, or traditional SIM card, is a chip you insert into your phone. An eSIM is built into the phone and downloaded. For a trip to the UK, here's what changes in practice:

In short, a local SIM card is useful if you need a UK number, for housing or a job for example. A travel eSIM is simpler for a vacation. To go further, we compare the two in detail in our article eSIM or SIM card.

To stay connected in England, a SIM card and an eSIM aren't your only options. Here are the other solutions, and what they're worth.

Public Wi-Fi in England

Free Wi-Fi is widespread in the UK: cafés, museums, shopping centers, hotels and many train stations. On the London Underground, Wi-Fi is available in many stations. It's a good extra, not a full solution: you have no connection on the street, and an open public network calls for caution (avoid checking your bank on it).

Pocket Wi-Fi in the UK

A pocket Wi-Fi is a small device that picks up the mobile network and broadcasts a Wi-Fi connection. It can work for a group, but you have to rent it, charge it every day, carry it with you and return it at the end of the trip. For one or two people, an eSIM with hotspot often costs less and weighs less.

Calling from England

The UK country code is +44: to call a UK number from a foreign phone, dial +44 then the number without the leading 0. With a data-only eSIM, you call via WhatsApp, FaceTime or Telegram, on Wi-Fi or your mobile data.

To call your home country from England, dial its international code then the number. If you use your usual SIM card, check how much these calls cost on your plan.

Our tips to keep your mobile internet going in England

• Download Google Maps offline maps before you leave.
• Turn off automatic app updates and photo backups over mobile data.
• Keep an eye on your usage in your phone's settings or in your eSIM app.
• Plan a little more data than you need: to estimate it, use our how many GB for your trip tool.

SIM card or eSIM in England: it all depends on how long you're traveling and how much data you use. Here's our answer, trip by trip:

• Weekend or city break in London: the eSIM is the best option. With 1 to 3 GB for $1.20 to $3.10, you're online as soon as you land without paying for a 30-day plan.
• One to two weeks of vacation: the eSIM is still the simplest and cheapest option up to 10 GB ($4.90 for 5 GB, $8.80 for 10 GB), with your usual number active.
• A month and heavy usage: a prepaid UK SIM card (EE, O2, Vodafone, Lebara) becomes good value per GB. The 20 GB eSIM for $16.80 remains a good option if you want to skip the store.
• Studies, internship or moving there: get a local SIM card so you have a UK number, and maybe keep an eSIM for the first few days.

And if your trip continues in Europe after England, take a look at our Europe eSIM: a single plan for several countries.