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A UK eSIM from HelloRoam starts at €2.98 across 204+ carrier networks in 185+ countries. Activate via QR code in under two minutes on any eSIM compatible phone. Your Three Ireland, Vodafone IE, or Eir number stays active on dual SIM.
202+
local networks
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5G support
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![UK [[networkType]] network speeds](/icons/figma-2026/stats-speedometer.svg?dpl=dpl_92bnJNxd9ErHnRYaChKy8tip525L){kind=icon}
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Cheapest eSIM UK plans from London to Edinburgh and beyond
Cheap eSIM for United Kingdom, starting from €2.98. Local 4G LTE and 5G data on top carrier networks in United Kingdom. Works on all eSIM compatible phones. Britain is Ireland's nearest neighbour and a constant destination for work trips, city breaks, and concerts in London, Edinburgh, or Manchester. A travel eSIM UK plan from HelloRoam starts at €2.98, covers England, Scotland, Wales, and Northern Ireland, and activates at home via QR code before you board at Dublin, Shannon, or Cork. 180-day refund guarantee, GDPR-compliant checkout.
UK eSIM with fast 5G coverage
HelloRoam offers eSIM plans for the UK starting from $3.00. Connect on 5G and 4G networks including O2, Three, and Vodafone. Handy for trips to London, Edinburgh, or Manchester from Dublin.
- Plans start at €2.98 with 5G speeds
- Coverage from T-Mobile UK and 3+ other operators
- Instant activation in under 2 minutes
- 180-day money-back guarantee
- UK coverage across major cities
- Network
- 5G
- Plans From
- €2.98
- Activation
- Under 2 min
- Guarantee
- 180 days
How to Set Up an eSIM in UK
Pick a data plan for your destination and complete checkout online.
Scan the QR code to install your eSIM instantly.
Your eSIM installs instantly and activates the moment you land.
Track usage, top up data, and manage all your eSIMs in one place.
Pick a data plan for your destination and complete checkout online.
Scan the QR code to install your eSIM instantly.
Your eSIM installs instantly and activates the moment you land.
Track usage, top up data, and manage all your eSIMs in one place.
Trip changed? No bother, we have got you sorted.
Plans change, and that is no bother at all. With HelloRoam, you can request a full refund for your eSIM within 180 days of purchase.
Learn more about our refund policyHelloRoam UK eSIM vs Three Ireland, Vodafone IE and Eir roaming
Comparing eSIM vs a travel SIM card for UK? Eir charges up to €5.99/day for Worldwide Roaming, Vodafone IE up to €6.99/day for Global Roaming, and Three Ireland applies daily charges outside its Go Roam zone. Skip the airport SIM counter at Dublin Terminal 1 and get a prepaid eSIM from €2.98 with instant QR activation and a six-month money-back guarantee.
| Feature |  | Irish carrier roaming add-on | Limited data eSIM |
|---|---|---|---|
| 180-day refund policy |  |  | |
| 24/7 live chat support | |  | |
| €0 activation fees | | | |
| 99.8% uptime guarantee | | | |
| No data overage charges | | | |
| Instant QR code delivery | | | |
| Premium UK carrier networks | | | |
Why Travellers from Ireland Use HelloRoam e-sim for UK
Best eSIM Prices for UK
HelloRoam, the best eSIM UK. Compare plans and find the right data for your trip.
| Number of days | Price |
|---|---|
| 1 day | €2.86 |
| 3 days | €8.22 |
| 7 days | €19.19 |
| 15 days | €39.76 |
| 22 days | €55.70 |
| 30 days | €73.27 |
HelloRoam vs Other eSIM Providers for UK
eSIM provider reviews from Irish travellers consistently highlight the 180-day refund policy, zero activation fees, and 24/7 live support. See how HelloRoam compares to Airalo, Holafly, Saily, and other eSIM providers on the things that matter most for your UK holiday.
| Feature comparison | | Airalo | Holafly | Nomad | Saily | Ubigi |
|---|---|---|---|---|---|---|
| 180-day refund policy | | | | | | |
| 24/7 live chat support | | | | | | |
| €0 activation fees | | | | | | |
| 99.8% uptime guarantee | | | | | | |
| No data overage charges | | | | | | |
| Instant QR code delivery | | | | | | |
| Premium UK carrier networks | | | | | | |
| Own branded carrier identity (SPN) | | | | | | |
Mobile connectivity guide for the United Kingdom
The UK has strong 5G and 4G coverage across London, Manchester, Birmingham, Edinburgh, Glasgow, and Cardiff. O2, Three, and Vodafone all run extensive networks. Rural areas of Scotland, Wales, and the English countryside can be patchier, but cities and tourist areas are well covered.
A HelloRoam eSIM is especially useful for Irish travellers heading to the UK post-Brexit where your EU roaming may no longer apply.
- HelloRoam connects to T-Mobile UK 5G, Three 4G, O2 5G and 1 more in UK
- 5G and 4G on O2, Three, and Vodafone across England, Scotland, Wales, and Northern Ireland
- Activate at home before your Aer Lingus or Ryanair flight from Dublin
- Great for London city breaks, Scottish Highlands trips, or Manchester weekends
eSIM Travel Tips for UK
Post-Brexit: EU roaming may not apply in the UK
Since Brexit, EU roaming rules no longer automatically cover the UK. Some Irish plans charge extra for UK roaming. Check your Eir, Three IE, or Vodafone IE plan before you go. A HelloRoam eSIM from $3.00 is often cheaper and more predictable than roaming add-ons.
Download the Tube map offline for London
The London Underground has patchy coverage underground, especially on older lines. Download the TfL Go app or a Tube map offline before heading underground. Most Jubilee and Elizabeth line stations have 4G now, but deep Piccadilly line stops can drop signal.
Coverage in the Scottish Highlands is limited
If you are planning a Scottish road trip to places like Skye, Torridon, or Kintyre, download offline maps in advance. Highland areas can have very limited signal and sometimes no coverage at all in the most remote glens.
Keep your Irish number for cross-border calls
For trips that cross between Ireland and Northern Ireland, your dual SIM setup is very useful. Keep your Irish SIM for calls and use HelloRoam for data. Works reliably on both sides of the border.
UK trains have improving but inconsistent signal
The UK's rail network is extending trackside 4G coverage but signal on intercity routes can still drop, especially through tunnels and in rural areas. Download content before long journeys on routes like London to Edinburgh or London to Manchester.
Mobile networks in the UK: what Irish travellers should know
HelloRoam connects on O2, Three, and Vodafone in the UK. All three have 5G rolling out in major cities. O2 is strong across England and Scotland. Three has competitive data speeds. Vodafone covers urban and suburban areas well. Your eSIM picks the strongest signal automatically wherever you are in Britain.
- T-Mobile UK
- 5G
- Three
- 4G
- O2
- 5G
- O2
- 4G
HelloRoam eSIM vs Irish carrier UK roaming
Here is an honest look at your data options for a UK trip from Ireland.
RecommendedFrom €4.27 total
Plans from $3.00. Buy before you travel, scan a QR code at home, and arrive in London or Edinburgh already connected. No bill shock, no add-ons to remember.
€8.53–€21.34 total
Available at newsagents and phone shops across the UK but you need to be there first. Not ideal when you want data from the moment you clear arrivals.
€6.83–€10.24/day
UK roaming is no longer covered by EU rules since Brexit. Check your Irish plan for specific UK roaming charges, which can be $1 to $3 per day depending on your provider.
| Category | Recommended | UK prepaid SIM | Irish carrier UK roaming |
|---|---|---|---|
| Typical cost | From €4.27 total | €8.53–€21.34 total | €6.83–€10.24/day |
| Details | Plans from $3.00. Buy before you travel, scan a QR code at home, and arrive in London or Edinburgh already connected. No bill shock, no add-ons to remember. | Available at newsagents and phone shops across the UK but you need to be there first. Not ideal when you want data from the moment you clear arrivals. | UK roaming is no longer covered by EU rules since Brexit. Check your Irish plan for specific UK roaming charges, which can be $1 to $3 per day depending on your provider. |
Best time to visit the UK from Ireland
The UK is an easy and popular short break destination from Ireland with multiple daily flights from Dublin, Cork, Shannon, and other Irish airports. Spring and summer are the most popular for London city breaks and Scottish road trips. Winter brings Christmas markets and cosy pub culture. Edinburgh's Hogmanay and the Edinburgh Fringe in August are both worth planning around.
Prices verified:
Your UK eSIM Questions Answered
A prepaid eSIM UK plan from HelloRoam covers London, Manchester, Edinburgh, and the whole country on British networks from €2.98. HelloRoam activates at home via QR code before flying from Dublin. Plans come with no contract and work on any unlocked eSIM phone.
A HelloRoam data sim card UK plan covers London, Manchester, Edinburgh, Cardiff, and Northern Ireland on local UK network speeds from €2.98. Activate via QR code at home, fully prepaid with no contract, no SIM card to swap, and a 180-day refund guarantee on every order.
HelloRoam is a top-rated eSIM for travellers from Ireland visiting UK. Plans start from €2.98 and connect to 200+ carrier networks in United Kingdom at local 4G LTE and 5G speeds. Activate via QR code in under two minutes, keep your Three Ireland, Vodafone IE, or Eir number on dual SIM, and enjoy a full refund window of up to six months. No daily roaming charge and no carrier contract.
A UK eSIM starts from €2.98. Fixed data plans run from 1GB to 20GB. Unlimited daily plans suit longer trips. All plans include local 4G LTE and 5G access with no overage charges and no carrier contract. That is far less than what Eir charges for non-EU Worldwide Roaming or Vodafone IE for Global Roaming.
eSIM in UK connects to local 4G LTE and 5G networks. Your phone picks the strongest available signal automatically on arrival — no manual carrier selection needed. Coverage spans major cities, airports, main roads, and most rural areas. You get the same local network speeds as residents of United Kingdom, not the premium daily rates Eir or Vodafone IE charge for international roaming.
Getting your eSIM for UK takes three steps. First, choose your plan at helloroam.com and pay in EUR. Second, scan the QR code from your confirmation email in Settings under Mobile Data, then Add eSIM. Third, your e-sim installs in under two minutes and activates when you land. Do everything at home before you head to Dublin Airport, Shannon, Cork, or Knock. No shop visit, no physical SIM swap, no queue.
Yes. iPhone XS and all newer models support your eSIM for UK. Go to Settings, tap Mobile Data, then Add eSIM, and scan the QR code from your HelloRoam email. Your Irish number stays active on your main SIM through dual SIM while HelloRoam handles all travel data on the eSIM line. iPhone 14 and later are eSIM-only with no SIM tray needed.
A UK eSIM starts from €2.98. Eir charges up to €5.99 per day for non-EU Worldwide Roaming. Vodafone IE charges up to €6.99 per day for Global Roaming. Three Ireland applies daily charges outside its Go Roam zone. HelloRoam connects to local networks in UK at local data prices, not the daily rates your Irish mobile carrier charges.
Activating your eSIM for UK takes under two minutes. Scan the QR code in Settings under Add eSIM before you fly. You can do this at home or on the Wi-Fi at Dublin Airport before departure. When you land in UK, your mobile connects to a local network automatically. No kiosk, no waiting, no fuss.
HelloRoam offers a generous refund window on all eSIM plans for UK. If your plans change and you have not activated your eSIM, you get a full refund. If you activated and used some data, HelloRoam refunds the unused portion. Contact support with your order ID within 180 days. Refunds process in 5 to 14 business days, a longer window than Airalo and most other providers.
A UK eSIM from HelloRoam costs less than daily roaming add-ons from Eir, Vodafone IE, or Three Ireland for non-EU destinations. Eir Worldwide Roaming costs up to €5.99 per day. Vodafone IE Global Roaming costs up to €6.99 per day. Three Ireland charges daily outside its Go Roam zone. HelloRoam connects your phone to a local UK network at local data prices, so you pay a fraction of those daily fees from €0.97 per day with no contract.
Yes, HelloRoam is a great pick for UK travel. Plans start from €2.98 and connect to 200+ carrier networks across 185+ countries, with a six-month refund window. It works on any unlocked eSIM compatible iPhone, Samsung, or Android mobile. You get local 4G LTE and 5G speeds, 24/7 live chat support, and instant QR code delivery. No store visit, no contract, no Eir or Vodafone IE roaming bill.
What to Know Before You Buy
eSIM requires an unlocked, eSIM-compatible device. Check your phone settings before you buy.
Most travel eSIM plans provide data only. Your existing phone number stays active for calls and texts on your primary SIM.
Coverage quality varies by location within UK. Urban areas typically have strong 4G/5G coverage, while rural or remote areas may have limited connectivity.
Install your eSIM before departure. Activation requires an internet connection, which may not be available at your destination airport.
Transparency Notice
- Service Provider Name (SPN)
- HelloRoam appears as the carrier name on your phone's status bar through the SPN, a standardized field in the eSIM profile. Unlike most travel eSIM resellers, HelloRoam provisions its own Service Provider Name.
- Public Network Name (PNN)
- HelloRoam holds a registered Public Network Name, the official carrier identity filed with telecommunications authorities. HelloRoam is recognized as a licensed service provider, not a white-label reseller.
- Access Point Name (APN)
- HelloRoam eSIMs auto-configure their Access Point Name during installation. Your device connects to the strongest local network infrastructure without manual settings.
Prices are our retail rates across 185+ countries. Plan recommendations use real traveller feedback and network performance data. Every purchase includes a 180-day money-back guarantee.
