TL;DR: Roamless is the best eSIM option for the United Kingdom because of its $18.95 for 10 GB fixed plan and pay-as-you-go model with no expiration date. Buy an eSIM for United Kingdom.
Heading to the UK? Let's find you the perfect eSIM to keep you connected. Ready to ditch roaming fees and embrace seamless connectivity? Let's dive in and get you set up for your UK adventure.
What is the Best eSIM for the UK?
Roamless is the best eSIM for the United Kingdom thanks to its $18.95 for 10 GB fixed plan and pay-as-you-go option with no expiration date. It also has an international calling feature directly from the app starting at $0.01 per minute, unlimited hotspot support, a 500 MB free trial, and data speeds up to 5G. Below is a comparison of popular eSIM providers to find the best eSIM for United Kingdom travel.
eSIM Provider | Data Plan Options | Key Features | Calls/SMS | Network Partners and Coverage |
|---|---|---|---|---|
Roamless | Pay-as-you-go: 1 GB for $2.45, no expiration Fixed plans: 10 GB for $18.95, valid for 30 days Buy an eSIM for UK | Pay-as-you-go option, in-app calling feature, 500 MB free trial, unlimited hotspot, data management via the app | International calls start from $0.01 per minute | Vodafone (up to 5G), O2 (3G/4G), Three UK (up to 5G) – No speed limits |
Saily | From 1 GB for $4.49 to 20 GB for $31.99 / (7–30 days), also unlimited data options | No hotspot limitations, no pay-as-you-go option | Data-only (SMS and calls only through VoIP apps) | Local network providers in the UK – Up to 5G |
Nomad | From 1 GB for $4.50 to 50 GB for $45.00 / (7–30 days), also unlimited data options | Hotspot support, no local phone number | Data-only (SMS and calls only through VoIP apps) | Vodafone (UK), O2 (UK), Three – Up to 5G |
GigSky | From 1 GB for $5.99 to 100 GB for $95.62 / (7–180 days), also unlimited plan options | A free trial option, speed reduction for unlimited plans | Data-only (SMS and calls only through VoIP apps) | Local network providers in the UK – Up to 5G |
Orange | From 1 GB for $5.99 to 100 GB for $64.99 / (30 days), also data+calls+sms options | Instant activation, speed may vary in rural areas | Data+Calls+SMS and Data-only plan options | Local network providers in the UK – Up to 5G |
Table 1: Comparison of Best eSIM Providers for the UK
Note: Prices, plan details, and technical features in the table were verified on October 22, 2025, based on the information available from each eSIM provider’s official website.
Disclaimer: Please verify the current information directly with each eSIM provider before making a purchase.
Choosing the Right eSIM for the UK
When selecting an eSIM for your UK adventure, consider these key factors:
Coverage: Ensure your eSIM works with major UK networks for reliable service.
Data allowance: Look for plans that offer enough data for your needs.
Flexibility: Opt for services that allow easy top-ups and don't lock you into long-term commitments.
Value for money: Compare prices, but remember that the cheapest option isn't always the best.
Additional features: Consider extras like the ability to use your plan in multiple countries.
Why Roamless eSIM is Your Ideal for UK Travel
Roamless eSIM offers a suite of features that make it one of the best choices for your UK trip:
Pay-as-you-go: Roamless gives you the flexibility to top up as needed. No more worrying about unused data or running out mid-trip. Simply add funds when you need them, giving you complete control over your spending.
Never-expiring funds: Unlike many providers, your Roamless wallet balance doesn't have an expiration date. This means you can load up your account before your trip and use the funds whenever you're ready, even if your plans change.
Multi-country usage: Roamless isn't limited to just the UK. Your funds can be used across multiple countries, making it perfect for multi-destination trips or future travels. No need to juggle different plans or providers as you move between countries.
Unthrottled speeds: Roamless doesn't slow down your connection speeds, ensuring you always have access to the fastest available network. This is crucial for everything from real-time navigation to video calls with loved ones back home.
You can check our eSIM for the UK page before planning your trip.
eSIM in the UK's Most Popular Destinations
eSIM in London
As you navigate the iconic sights of Big Ben, the Tower of London, and Buckingham Palace, Roamless eSIM ensures you're always connected. Use your phone for real-time updates on the Tube schedule, book last-minute theatre tickets, or share your adventures on social media without worrying about data limits or slow speeds. With Roamless, you can confidently explore every corner of this vibrant city.
For more information, you can visit our page on eSIM London.
eSIM in Edinburgh
Scotland's capital is a blend of history and modernity. As you climb the Royal Mile or explore the hidden closes, Roamless eSIM keeps you connected. Use your data to access audio guides for the city's many museums, find the best spots for authentic Scottish cuisine, or share stunning photos of the city's skyline from Arthur's Seat. The reliable connection ensures you won't miss a beat in this culturally rich city.
eSIM in Manchester
From its industrial heritage to its thriving music scene, Manchester has a lot to offer. With Roamless eSIM, you can stream your favorite Manchester bands as you explore the city, use navigation apps to find hidden street art, or video call friends to show them around the iconic Old Trafford stadium. The consistent, high-speed connection means you can fully immerse yourself in the city's vibrant atmosphere.
eSIM in Other UK Hotspots
The UK offers a wealth of experiences beyond its major cities. Whether you're exploring the rugged coastlines of Cornwall, hiking in the Lake District, or visiting the Giant's Causeway in Northern Ireland, Roamless eSIM enhances your journey. Use your connection to check weather forecasts before outdoor adventures, find off-the-beaten-path restaurants in small villages, or share breathtaking landscape photos instantly. In more remote areas, where Wi-Fi might be scarce, your Roamless eSIM ensures you're never out of touch. This reliable connection can be a lifesaver for accessing important information or staying in contact with accommodations as you traverse the diverse and sometimes remote British landscapes.
How Much Data Do I Need for the United Kingdom?
Basic use typically requires around 1 GB to 3 GB per week, regular use needs about 3 GB to 7 GB, and intensive use may reach 7 GB or more, depending on how often you stream, browse, or use navigation apps. These estimates can vary depending on your usage habits, and the table below shows the approximate daily and weekly data amounts for each usage level:
Use Level | Estimated Daily Data | Estimated Weekly Data | Explanation |
|---|---|---|---|
Basic use | 150–300 MB | 1–3 GB | For essential activities such as navigation, messaging, checking emails, and occasional social media use. Ideal for short trips or travelers who mostly rely on Wi-Fi. |
Regular use | 400–700 MB | 3–7 GB | For regular browsing, social media, and communication apps. Suitable for travelers who use their phones daily for online maps, chat, and light streaming. |
Intensive use | 1 GB or more | 7 GB or more | For streaming videos, using data-intensive apps, or working remotely. Ideal for travelers who rely heavily on mobile data for entertainment and productivity. |
Table 2: Estimated Daily and Weekly Data Needs for the United Kingdom Based on Usage Habits
Disclaimer: Actual data usage can vary depending on file sizes, the quality of media you view, and the amount of time you spend online. Always monitor your data consumption to avoid unexpected costs.
For more information, you can read our guide on how much data do I need for international travel.
Roamless Fixed Data Plans for the United Kingdom
Roamless has fixed data plans for the United Kingdom, each valid for 30 days. These plans are suitable for international visitors to the United Kingdom who already know how much data they will need during their stay.
Data Amount | Validity | Price (USD) |
|---|---|---|
500 MB | 30 days | Free trial |
1 GB | 30 days | $3.95 |
2 GB | 30 days | $6.95 |
3 GB | 30 days | $8.45 |
5 GB | 30 days | $10.95 |
10 GB | 30 days | $18.95 |
20 GB | 30 days | $29.95 |
Table 3: Fixed Data Plans for the United Kingdom with Roamless eSIM
Note: Pay-as-you-go options are also available for the United Kingdom, starting at $2.45 for 1 GB with no expiration, allowing users to choose any data amount as needed.
Disclaimer: Prices, data amounts, and other technical details are accurate as of October 22, 2025, and may change over time. For the most up-to-date information, please verify details directly with Roamless.
Roamless Network Partners and Their Coverage in the United Kingdom
Roamless’s network partners in the United Kingdom are Vodafone, O2, and Three UK, which are among the country’s main mobile operators. They provide 4G and 5G coverage across the mainland.
Coverage:
5G service is widely available across major urban areas including London, Manchester, and Edinburgh, as well as along major transport routes and coastal areas [1].
4G networks cover nearly the entire country, ensuring reliable connectivity in cities, towns, and popular travel destinations [1].
3G service has been largely replaced by newer technologies, with operators focusing on expanding 4G and 5G coverage across the United Kingdom [1].
Network Speed and Technology:
According to nPerf’s Download Bitrates Map, download speeds in London typically average around 60–100 Mbps, reflecting strong 4G and 5G performance in central and business districts [2].
In Manchester, speeds generally range between 55 and 90 Mbps, offering stable connectivity across most residential and commercial zones [2].
Edinburgh shows moderate performance, with download speeds varying from 35 to 70 Mbps, slightly lower in outer suburban and hillside areas [2].
City | Average Download Speed (Mbps) |
|---|---|
London | ~80 Mbps |
Manchester | ~70 Mbps |
Edinburgh | ~50 Mbps |
Table 4: Average mobile download speeds in major UK cities
Disclaimer: The download speeds shown in the table are based on nPerf’s public data for Vodafone, O2, and Three UK, accurate as of October 22, 2025. Actual performance may vary depending on local network conditions, device type, and network congestion. For the most up-to-date information, please verify details directly with the respective mobile operators.
Roaming Charges for the UK
Roaming charges in the UK can be much higher than in many other countries. If you use your home carrier’s SIM card, you may face expensive fees for data, calls, and texts, which can quickly add up. These charges are often significantly higher than domestic rates, making it easy to accumulate unexpected costs during your trip.
For example, Telstra charges $10 for 2 GB per day [3], and Verizon charges about $2.05 for 1 MB of data [4]. In comparison, the Roamless fixed plan costs $3.95 for 1 GB, which represents a saving of around 99% compared to the average traditional roaming charges in the United Kingdom. With Roamless eSIM, travelers can connect to local UK networks, enjoy reliable internet in cities and rural areas, and avoid unexpected roaming fees.
For more information, you can read our guide on roaming charges in the UK or visit our page on eSIM UK.
Disclaimer: Prices and roaming charges referenced are based on publicly available information from carrier websites as of October 22, 2025 and may vary by plan or currency exchange rates. Users are advised to verify the latest roaming costs directly with each mobile operator before traveling.
Frequently Asked Questions
Which eSIM is best for the United Kingdom in 2025?
- Roamless is the best eSIM for the United Kingdom because it has both fixed data plans and a pay-as-you-go option. It also includes an international calling feature directly from the app, unlimited hotspot support, a 500 MB free trial, instant activation, and speeds up to 5G with no throttling.
How much does an eSIM cost for a trip to the UK?
- Most UK eSIM fixed data plans cost between $3.95 and $6.00 for 1 GB of data. Roamless offers a fixed plan priced at $3.95 for 1 GB and a pay-as-you-go option priced at $2.45 for 1 GB in the United Kingdom.
How much data do I need for a trip to the UK?
- You need about 1 GB–6 GB of data per week for basic activities such as using maps, translation tools, or messaging. Travelers who frequently stream videos, use navigation, or work online may need 7 GB or more per week.
Can I make international calls with an eSIM in the UK?
- Yes, but only with certain eSIM apps. Roamless, for instance, lets users make international calls directly from its app, starting at $0.01 per minute.
Does Roamless work in rural areas of the UK?
- Yes, but coverage is more consistent in major cities such as London, Manchester, and Edinburgh. Rural and remote areas may experience slower speeds depending on network availability.
How does the Roamless free trial work in the UK?
- In the UK, the Roamless eSIM includes a 500 MB free trial that activates automatically after installation. This allows users to test the connection before buying a data plan.
How to install a Roamless eSIM for the UK?
- Download the Roamless app, sign in, and go to the Data tab. You can activate your eSIM with one-click installation or by scanning the provided QR code. Once installed, select Roamless for mobile data and start using it during your trip to the United Kingdom.
Sources:
[1] nPerf. ''Vodafone Mobile's 3G / 4G / 5G coverage map in United Kingdom''. Accessed October, 2025. - https://www.nperf.com/en/map/GB/-/164526.Vodafone-Mobile/signal?ll=53.85252660044951&lg=-5.3173828125&zoom=6
[2] nPerf. ''O2 Mobile's 3G / 4G / 5G bitrates map in United Kingdom''. Accessed October, 2025. - ''https://www.nperf.com/en/map/GB/-/2012852.O2-Mobile/download?ll=53.85252660044951&lg=-5.3173828125&zoom=6''
[3] Telstra. ''International roaming on a plan''. Accessed October, 2025. - https://www.telstra.com.au/international-roaming#europe
[4] Verizon. ''International services & pricing while traveling outside the US''. Accessed October, 2025. - https://www.verizon.com/support/international-services-pricing/
Similar readings
Change countries, not eSIMs or plans.
Roamless switches between countries and networks automatically.
FEATURED ROAMLESS TRAVEL DESTINATIONS
