Country
A-B
C-E
F-H
I-Z
Instant Activation
High Internet Speeds
Hotspot Sharing
No Hidden Charges
Belgium eSIM
Belgium
FROM $2.58
Ï 5G
Network Provider: Base, ORANGE Belgium NV/SA, Orange
  • 22 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Brazil eSIM
Brazil
FROM $3.90
Ï 5G
Network Provider: TIM, Vivo S.A.
  • 19 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Afghanistan eSIM
Afghanistan
FROM $8.90
Ï 4G
Network Provider: Afghan Wireless Afghanistan, Etisalat, Roshan Afghanistan
  • 4 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Albania eSIM
Albania
FROM $3.49
Ï 4G
Network Provider: Vodafone
  • 21 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Algeria eSIM
Algeria
FROM $3.90
Ï 4G
Network Provider: Mobilis, Ooredoo, Optimum Telecom Algeria Spa
  • 18 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Andorra eSIM
Andorra
FROM $6.90
Ï 5G
Network Provider: Mobiland, STA Andorra
  • 21 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Anguilla eSIM
Anguilla
FROM $8.90
Ï 4G
Network Provider: Digicel Anguilla
  • 16 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Antigua and Barbuda eSIM
Antigua and Barbuda
FROM $8.90
Ï 4G
Network Provider: Digicel Antinua and Barbuda, FLOW
  • 5 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Argentina eSIM
Argentina
FROM $4.90
Ï 4G
Network Provider: Movistar, Telefonica Moviles Argentina S.A.
  • 19 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Armenia eSIM
Armenia
FROM $4.90
Ï 4G
Network Provider: Orange, UCOM Armenia, VEON Armenia CJSC
  • 17 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Australia eSIM
Australia
FROM $3.90
Ï 5G
Network Provider: OPTUS MOBILE PTY LTD, Optus, Vodafone
  • 8 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Austria eSIM
Austria
FROM $3.04
Ï 5G
Network Provider: 3, Orange, Three
  • 22 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Region
Instant Activation
High Internet Speeds
Hotspot Sharing
No Hidden Charges
Africa (29 Countries) eSIM
Africa (29 Countries)
FROM $12.49
Ï 5G
Network Provider: Airtel, AirtelTigo, Cell C
  • 3 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Asia (20 Countries) eSIM
Asia (20 Countries)
FROM $5.99
Ï 5G
Network Provider: 3, AirTel, CTM
  • 6 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Australia & New Zealand eSIM
Australia & New Zealand
FROM $3.99
Ï 5G
Network Provider: Optus, Spark
  • 5 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Balkans (5+ areas) eSIM
Balkans (5+ areas)
FROM $4.49
Ï 5G
Network Provider: A1, T-Mobile, Tele2
  • 5 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Caribbean (24 Countries) eSIM
Caribbean (24 Countries)
FROM $9.49
Ï 5G
Network Provider: Altice, Antel, Claro
  • 4 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Central Asia (5 Countries) eSIM
Central Asia (5 Countries)
FROM $3.99
Ï 4G
Network Provider: Beeline, Hutch, Jazz
  • 4 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
China (Mainland, HK, Macao) eSIM
China (Mainland, HK, Macao)
FROM $3.49
Ï 5G
Network Provider: CTM, China Unicom, csl
  • 7 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Europe (42+ Countries) eSIM
Europe (42+ Countries)
FROM $4.89
Ï 5G
Network Provider: 3, 7acht, A1
  • 5 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
South America (17 Countries) eSIM
South America (17 Countries)
FROM $8.99
Ï 5G
Network Provider: Antel, Claro, Digicel
  • 4 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Middle East (11 Countries) eSIM
Middle East (11 Countries)
FROM $9.99
Ï 5G
Network Provider: Bakcell, Beeline, Etisalat
  • 3 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
North America (3 Countries) eSIM
North America (3 Countries)
FROM $4.49
Ï 5G
Network Provider: AT&T, Bell, Movistar
  • 6 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Global eSIM Plan (127 Countries) eSIM
Global eSIM Plan (127 Countries)
FROM $12.99
Ï 5G
Network Provider: 3, 7acht, A1
  • 5 plan options available
  • 5G and hotspot-enabled
  • Activation within 2 mins
  • 24x7 Customer Service
  • 100% Money-back Guarantee
Do You Really Need a SIM Card for the UK After Brexit?
Savings & Comparisons

Do You Really Need a SIM Card for the UK After Brexit?

Brexit changed the rules for mobile roaming in the UK. Discover if your EU SIM will work, how to avoid expensive charges, and why a travel eSIM is the smartest choice for your trip.

James Sterling, UK Business Travel & Roaming Analyst
(Updated: 30 January 2026)
9 min read

The Post-Brexit Roaming Shake-Up: What Actually Changed?

Remember the good old days of seamless European travel? You could cross from France to Italy to Germany, and your phone just worked, no extra charges, no fuss. This was thanks to the EU's "Roam Like at Home" policy. For years, this meant your calls, texts, and data cost the same in any EU country as they did back home. When the UK was part of the EU, this fantastic perk applied there too. But things have changed.

Since the UK officially left the European Union, it is no longer legally required to be part of this arrangement. The guarantee of free roaming is gone. So, what does this mean for you, the traveler? It means uncertainty. The decision to charge for roaming in the UK now rests entirely with your individual mobile provider back home. Some networks, especially in the early days, chose to maintain the free roaming policy as a gesture of goodwill. However, an increasing number of carriers across the EU have reintroduced roaming charges for their customers traveling to the UK.

The Carrier Lottery: Who Charges and Who Doesn't?

This is where it gets tricky. There's no single answer. A provider in Spain might have a different policy from one in Germany or Poland. Here's a general breakdown of the situation:

  • Some still offer it (with a catch): Many networks that haven't brought back full charges have implemented strict 'fair usage' policies. You might get free roaming up to a certain data limit (say, 5GB or 10GB), after which you'll either be charged per megabyte or have your speeds throttled to a crawl, making apps like Google Maps unusable.
  • Some have reintroduced daily fees: A growing number of major European carriers now treat the UK like other non-EU destinations such as Switzerland or Turkey. This often means a flat daily fee (€2-€7 per day) to use your domestic plan, which adds up quickly on a week-long trip.
  • Some charge pay-as-you-go rates: This is the most dangerous scenario, where you're charged exorbitant rates for every megabyte of data you use without a specific travel pass. This is how travelers return home to shocking bills in the hundreds, or even thousands, of euros.

The bottom line is that you can no longer assume your EU SIM will work for free in the UK. You must check your specific provider's current policy right before you travel, as these can change with little notice. This uncertainty is precisely why so many travelers are now exploring better options for navigating post-Brexit travel connectivity and taking control of their expenses.

Your Connectivity Options in the UK: A Traveler's Breakdown

Landing at Heathrow or stepping off the Eurostar at St Pancras, the first thing you'll want is data. You need it to navigate the Tube, book a ride-share, or let family know you've arrived safely. So, what are your real choices for getting connected? Let's break them down, warts and all.

Option 1: Relying on Your Home SIM (The Roaming Gamble)

This is the default option—doing nothing and just letting your phone connect to a UK network. The primary advantage is convenience. It requires zero effort. However, the disadvantages are now significant. As we've covered, you are rolling the dice on costs. A simple background app update or a few minutes of watching Instagram stories could trigger high fees without you even realizing it. It’s a gamble that can easily ruin a travel budget. Before you consider this, it's essential to compare the costs of roaming versus an eSIM to see just how much you could be overpaying.

Option 2: Buying a Local UK SIM Card (The Traditional Route)

For decades, this was the go-to move for savvy travelers. You land, find a vending machine or a carrier shop (like EE, Vodafone, O2, or Three) in the airport or city, and buy a prepaid physical SIM card. This is still a viable option, especially for longer trips (a month or more) where having a local UK number might be beneficial.

However, it's not without its hassles. Imagine you've just landed after a long flight. The last thing you want is to wait in a long queue at a kiosk, try to understand various plan options, and go through the process of swapping out your tiny home SIM card (and hoping you don't lose it). The experience of buying a SIM at Heathrow Airport can be time-consuming and stressful. Furthermore, you temporarily lose access to calls and texts on your primary number, which can be an issue for things like banking verification codes.

Option 3: Using an eSIM for the UK (The Modern Solution)

This is where technology really makes a traveler's life easier. An eSIM (embedded SIM) is a digital SIM card that's already built into most modern smartphones. Instead of a physical chip, you simply download a data plan directly to your device. For a trip to the UK, this method is a game-changer.

Here’s how it works: You purchase a UK data plan online before you even leave home. You receive a QR code, scan it with your phone, and the plan is installed in minutes. When you land in the UK, you just switch your phone's data source to the eSIM, and you're instantly connected. Your physical home SIM stays in your phone, so you can still receive calls and texts on your regular number. There are no queues, no swapping tiny plastic cards, and you pay a fixed, upfront price. The only prerequisite is to check if your phone is eSIM-compatible, which most flagship models from the last few years are.

Choosing the Best Mobile Network in the UK for Tourists

Not all mobile data is created equal. If you're heading to London for a weekend, almost any network will do. But if your trip includes hiking in the Scottish Highlands, exploring the Welsh countryside, or visiting the coast of Cornwall, network coverage becomes critical. The UK has four main mobile network operators, each with its own strengths:

  • EE (Everything Everywhere): Generally regarded as having the most extensive 4G and 5G coverage across the UK, especially in rural areas. If your travels take you off the beaten path, EE's network is often the most reliable.
  • Vodafone: A very strong all-rounder with excellent coverage in both cities and many rural locations. It competes closely with EE for the top spot in reliability.
  • O2: Known for its strong network in cities and towns. While its rural coverage is good, it can sometimes be less comprehensive than EE or Vodafone in the most remote parts of the country.
  • Three: Often offers very competitive data packages and has a robust 5G network in urban centers. Its rural 4G coverage has historically lagged behind the others but is continually improving.

So, which one should you choose? The great thing about a quality travel eSIM provider is that you don't have to. At Cellesim, we partner with top-tier network providers in each country. This means when you use our eSIM in the UK, your phone will automatically connect to the strongest available signal from one or more of these premium networks. It's a key part of how our eSIMs connect to local networks, ensuring you get reliable service whether you're in central London or the Lake District.

Practical Tips for Staying Connected in the UK

Beyond choosing your data plan, a few simple habits can make your connected life in the UK much smoother.

Download Offline Maps: Before you leave your hotel's Wi-Fi, download offline maps of London, Edinburgh, or any other city you're visiting in Google Maps or Maps.me. This is a lifesaver if you find yourself in an area with a spotty signal or want to conserve data. The London Underground map is also essential to have saved on your phone.

Use Wi-Fi Wisely: Free Wi-Fi is widely available in cafes, pubs, hotels, and on most National Rail trains. The London Underground also offers Wi-Fi at most stations for customers of major UK networks (and eSIMs that use them). Use these opportunities for heavy tasks like uploading photos, but always be cautious on public networks—avoid accessing sensitive information like online banking.

Activate Before You Fly: The single best piece of advice for using an eSIM is to install it at home before your trip begins. The activation process requires an internet connection, so doing it over your stable home Wi-Fi is far less stressful than trying to find a connection at a busy airport upon arrival.

Know Your Data Needs: Be realistic about how much data you use. If you're just using maps and messaging, a smaller plan (3-5GB) for a week is likely fine. If you plan on streaming video, using social media heavily, or using your phone as a hotspot, opt for a larger plan (10-20GB) to avoid any mid-trip top-up hassles.

The Smart Choice for UK Travel Today

So, do you need a new sim card in the UK after Brexit? For the vast majority of travelers, especially those from the EU, the answer is a resounding yes. Relying on your home carrier's roaming is a financial gamble you don't need to take. While buying a local physical SIM is a functional but dated option, the clear winner for convenience, cost-control, and peace of mind in 2024 is the eSIM.

It eliminates the uncertainty of post-Brexit roaming rules, saves you from airport queues, and gets you online the second you land. You can navigate to your hotel, message your family, and start your UK adventure without a single moment of connectivity stress. It’s the modern, intelligent way to travel, allowing you to focus on what really matters: enjoying your trip.

Written by
J

James Sterling

UK Business Travel & Roaming Analyst - Cellesim UK
 Based in London's financial district, James Sterling is the Lead Analyst for Cellesim UK. With the return of roaming charges post-Brexit, James specializes in corporate connectivity solutions. He rigorously compares the daily roaming fees of ma...

Frequently Asked Questions

Got some questions before your Journey? Well here's everything you need to know before you go

Yes, your EU phone will physically work in the UK. However, whether your EU SIM card will roam for free is no longer guaranteed. Most EU mobile providers have either reintroduced roaming charges or implemented strict fair-use data caps for the UK, so you will likely have to pay extra.

Not automatically. The EU's "Roam Like at Home" policy no longer applies to the UK. While a few mobile operators may still offer it, most have started charging daily fees or pay-per-use rates. You must check with your specific provider before traveling to avoid expensive surprise bills.

Yes, for most travelers, an eSIM is significantly better. Buying a physical SIM at the airport often involves long queues after a flight and requires you to swap out your primary SIM card. An eSIM can be purchased online and installed before you travel, meaning you are connected the moment you land, with no waiting and no hassle.

EE is generally considered to have the best overall coverage, especially in rural areas. Vodafone is also an excellent all-around choice. O2 and Three are very strong in cities and urban areas. A good travel eSIM provider like Cellesim will partner with these top networks to ensure you get the best possible signal wherever you are.

This depends on your usage. For a typical week of using maps, messaging, social media, and some light browsing, a 5-10GB plan is usually sufficient. If you plan to stream video, use video calls frequently, or use your phone as a hotspot for other devices, consider a 15-20GB plan for peace of mind.

An eSIM is a digital SIM. You buy a data plan online, receive a QR code via email, and scan it with your phone's camera to install the plan. When you land in the UK, you simply switch your phone's mobile data setting to the eSIM profile. You get instant high-speed data while keeping your primary number for calls and texts.
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