HelloRoam offers eSIM data plans for London from S$3.65 a day. Your e SIM connects to local 4G/5G networks the moment you land, no roaming fees. Activate by QR code in under two minutes, fuss-free. Keep your Singtel, StarHub, or M1 number active on dual SIM while your e-sim handles data across 185+ countries.
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212+- 5G support
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London tourist sim network coverage from Heathrow across the city
Affordable eSIM for London, starting from S$3.65. Local 4G LTE and 5G data on trusted carrier networks in London. Works on all eSIM compatible handphones. A London tourist sim plan from HelloRoam starts at S$3.65 on EE 5G networks. A HelloRoam travel sim London runs on EE and 3 5G networks across Heathrow, the City, Shoreditch, Covent Garden, and the Tube network from S$3.65. Activate by QR before your Changi flight. HelloRoam backs every order with a 180-day refund guarantee on unactivated eSIMs. No physical SIM card needed.
London eSIM with fast 5G coverage
HelloRoam offers eSIM plans for London, United Kingdom. Connect on EE, Vodafone UK, O2 UK, and Three UK 4G/5G networks from the moment you land. Singapore travellers activate before departure from Changi Airport and arrive in London already connected. Plans start from S$3.65.
- Plans start at S$3.65 with 5G speeds
- Coverage from EE and 1+ other operators
- Instant activation in under 2 minutes
- 180-day money-back guarantee
- London coverage across major cities
- Network
- 5G
- Plans From
- S$3.65
- Activation
- Under 2 min
- Guarantee
- 180 days
How to Set Up an eSIM in London
Follow these steps to set up your eSIM on iPhone or Android handphone. Works for any eSIM for international travel from Singapore. No replacement SIM, no store visit.
Set up an eSIM on your iPhone with the HelloRoam app
Set up an eSIM on your Android handphone with the HelloRoam app
- 1
Choose your plan and checkout online
Select a data plan for your destination and complete checkout.
2Scan the QR code
Scan the QR code to install your eSIM straight away.
- 3
Activate in minutes: ready on arrival
Your eSIM installs instantly and activates when you land.
4Manage it all from our app
Track usage, top up data, and manage all your eSIMs in one place.
Trip changed? No worries, we've got you covered!
Plans can change anytime, and that's fine. With HelloRoam, you can request a refund on any unactivated eSIM within 180 days of purchase.
Learn more about our refund policyHelloRoam London eSIM vs Singtel, StarHub and M1
When comparing eSIM vs a travel SIM card for London, HelloRoam wins on price. It beats Singtel DataRoam, StarHub RoamEasy, and M1 international roaming add-ons. The cheapest eSIM plan starts from S$3.65, with no activation fee and a refund on unactivated eSIMs within 180 days.
| Feature comparison | HelloRoam | Local provider | Limited data eSIM |
|---|---|---|---|
| Refund on unactivated eSIMs |  Feature available |  Feature not available | Feature not available |
| 24/7 live chat support | Feature available |  Feature available | Feature available |
| $0 activation fees | Feature available | Feature not available | Feature available |
| Automatic data alerts at 80% usage | Feature available | Feature not available | Feature not available |
| No data overage charges | Feature available | Feature not available | Feature not available |
| Instant QR code delivery | Feature available | Feature not available | Feature available |
| Premium London carrier networks | Feature available | Feature not available | Feature not available |
Why Singaporean Travellers Choose an e SIM for London
24/7 live chat support
Need assistance at 2 am before a flight from Changi? HelloRoam support is available 24/7. Message us and a real person responds in under 2 minutes. No bots, no hold queue. Whether you need help with eSIM installation, plan changes, or troubleshooting a connection drop, the support team handles it in real time.
Best eSIM for London: skip Singtel roaming charges
HelloRoam connects to local 4G/5G networks in London from the moment you land, at a fraction of what Singtel, StarHub, or M1 charge for international roaming. Plans start from S$3.65 with no lock-in contract and no activation fees. You pay once and use data freely without surprise overage charges.
Keep your Singtel, StarHub, or M1 number
Keep your Singtel, StarHub, or M1 number active for calls and texts. HelloRoam handles your data through a second eSIM line on any dual SIM compatible handphone. Family and colleagues reach you on the same Singapore number while your travel data runs on a separate prepaid eSIM plan.
212+ carrier networks including London
HelloRoam connects to 212+ carrier networks across 185+ countries. Fixed data and unlimited data plans available. Your handphone switches to the strongest available 4G/5G or 5G signal automatically, where offered by the local network. That means consistent speeds whether you are in a major city, a highway rest stop, or a rural area.
Data alerts before you run out
HelloRoam alerts you at 80% data usage so you are never caught mid-trip without data. Top up instantly from the app without reinstalling your eSIM or visiting a store. Additional data activates in under a minute, keeping your connection live through navigation, video calls, and streaming.
Local 4G/5G speeds
Your London eSIM connects to trusted local 4G/5G networks. HelloRoam picks the strongest available signal for navigation, streaming, and video calls. You get local network speeds comparable to a prepaid SIM card purchased in-country, without the airport queue.
Regional and global eSIM plans
Travelling to multiple destinations? HelloRoam regional eSIM plans cover Southeast Asia, Europe, the Americas, and 185+ destinations in one purchase. Short holiday or long-term stay: choose fixed data or unlimited data plans. One account, no SIM swaps. A single regional plan replaces the hassle of sourcing a new local SIM card at every border crossing.
Hotspot and data sharing at no extra cost in London
Share your London eSIM data with a laptop or tablet using your handphone's built-in hotspot. No extra fees, no setup required. Works on all eSIM compatible devices. This is particularly useful for business travellers who need a consistent mobile broadband connection for their work laptop while abroad.
London eSIM Prices in 2026
Compare HelloRoam eSIM plans for London. Plans start from S$3.65 with local 4G/5G access. No Singtel or StarHub roaming surcharges.
| Number of days | Price (AUD) |
|---|---|
| 1 day | S$3.85 |
| 3 days | S$10.98 |
| 7 days | S$23.74 |
| 15 days | S$46.25 |
| 22 days | S$62.74 |
| 30 days | S$78.62 |
HelloRoam vs Other eSIM Providers for London
See how HelloRoam compares to Airalo, Holafly, and other eSIM providers for London travel. HelloRoam offers a refund on unactivated eSIMs within 180 days, 24/7 live chat support, and plans from S$3.65.
| Feature comparison | HelloRoam | Airalo | Holafly | Nomad | Saily | Ubigi |
|---|---|---|---|---|---|---|
| Refund on unactivated eSIMs | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature not available |
| 24/7 live chat support | Feature available | Feature available | Feature available | Feature not available | Feature available | Feature available |
| A$0 activation fees | Feature available | Feature not available | Feature available | Feature not available | Feature not available | Feature not available |
| Automatic data alerts at 80% usage | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature not available |
| No data overage charges | Feature available | Feature not available | Feature available | Feature not available | Feature not available | Feature not available |
| Instant QR code delivery | Feature available | Feature available | Feature available | Feature available | Feature available | Feature available |
| Premium London carrier networks | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature not available |
| Own branded carrier identity (SPN) | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature available |
e SIM Explained: Setting Up eSIM for London
An eSIM card is a digital SIM built directly into your handphone. There is no physical chip and no SIM tray to deal with. Scan a QR code to activate your e SIM in under 2 minutes on any eSIM compatible iPhone or Android. An eSIM for London works as a prepaid data plan with no airport SIM counter, no replacement SIM card, and no carrier contract. Follow the step-by-step setup guide to get connected before your flight from Changi. guide
Mobile coverage guide for London
London has 4G/5G coverage across its main districts, hotels, and tourist areas. EE, Vodafone UK, O2 UK, and Three UK provide reliable mobile data throughout the city. London is one of the top long-haul destinations for Singaporean business and leisure travel.
Singapore Airlines flies SIN-LHR direct. Your HelloRoam eSIM connects on EE when you enable data at London Heathrow Airport. Activate at home in Singapore before your flight from Changi for a smooth arrival.
- HelloRoam connects to EE 5G, Three 4G in London
- 4G/5G coverage across London and main tourist areas
- Connect on EE from London Heathrow Airport
- Plans from S$3.65, activate via QR code before your Changi departure
eSIM Travel Tips for London
Activate your eSIM before you leave Changi
Buy your HelloRoam eSIM for London before your flight from Singapore Changi Airport. Scan the QR code at home on Wi-Fi, enable data on arrival, and you are connected in London without searching for a local SIM card at the airport.
Keep your Singapore number active on dual SIM
On a dual SIM device, keep your Singtel, StarHub, or M1 SIM active for calls and texts from Singapore. Set HelloRoam as your data line for London. Family and colleagues in Singapore reach you on your regular number without international charges.
Download offline maps before your flight
Download Google Maps or Maps.me offline for London before leaving Singapore. This saves data on detailed map downloads and keeps you covered in areas with weaker signal during your first hours in London.
Oyster card or contactless for the Tube
The London Underground accepts contactless Mastercard, Visa, or Apple Pay. Load an Oyster card at Heathrow Terminal 2, 3, 4, or 5 upon arrival. Your HelloRoam eSIM keeps TfL Oyster and Citymapper running from the moment you land at LHR.
Book West End shows before you fly from Singapore
Popular West End productions and Michelin-starred restaurants in London sell out weeks ahead. Book online from Singapore using the TKTS website or restaurant platforms before your SQ flight. Your HelloRoam eSIM keeps confirmation emails accessible on arrival.
Mobile networks in London: what Singapore visitors need to know
London is served by EE, Vodafone UK, O2 UK, and Three UK. EE has the broadest 4G/5G network in London. Your HelloRoam eSIM connects to the strongest available signal automatically. No manual network switching is needed.
- EE
- 5G
- Three
- 4G
HelloRoam eSIM vs Singtel, StarHub, or M1 roaming in London
Your data options for a London trip from Singapore.
| Category | HelloRoam eSIM Recommended | Local United Kingdom SIM card | Singtel, StarHub, or M1 international roaming |
|---|---|---|---|
| Typical cost | From SGD 3.65 total | SGD 6.42–SGD 32.12 total | SGD 6.42–SGD 19.27/day |
| Details | Plans start at S$3.65 (S$ equivalent). Buy before your Changi departure, scan the QR code at home, and arrive in London on local 4G/5G data. | Physical SIM cards are available at London Heathrow Airport but require setup time and sometimes registration. An eSIM is ready before you leave Singapore. | Singapore carriers typically charge S$5 to S$20 per day for international roaming in United Kingdom. A week of roaming may add S$35 to S$140 to your phone bill. HelloRoam plans start at S$3.65. |
Prices approximate as of . Actual savings vary.
Best time for Singapore travellers to visit London
London is a year-round destination for Singaporeans. Summer from June to August has the best outdoor weather and peak cultural events including Wimbledon. Winter from November to February suits Singaporeans who enjoy Christmas markets and quieter museums. Singapore Airlines operates the SIN-LHR direct route daily.
Top Attractions in London
Big Ben
Big Ben's clock tower at the Palace of Westminster is one of London's top landmarks. Use HelloRoam eSIM to stay connected.
Stand on Westminster Bridge for the classic Big Ben photo angle.
Buckingham Palace
Buckingham Palace is the official London residence of the British monarch since 1837. Use HelloRoam eSIM to stay connected.
Arrive by 11 AM for a good spot to watch the Changing of the Guard.
London Eye
The London Eye is a 135-meter observation wheel on the Thames South Bank. Use HelloRoam eSIM to stay connected.
Book a sunset pod for the best views as city lights start to glow.
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Reviews
Trusted by Singaporean Travellers
Real reviews from Trustpilot and the App Store, quoted as written.
40k+ travellers have used HelloRoam
Cat
On a trip to Europe, my hotel Wi-Fi was so slow and outside Wi-Fi was unreliable. I couldn’t take it anymore so I got helloroam for a few days. It was tricky to set up correctly because of the primary settings (with my original number). But I reached out to their customer service via WhatsApp. Super responsive and helpful, with specific and clear steps to troubleshoot. Appreciate having 4G roaming instead of being stuck with in and out Wi-Fi during my trip!!
Rated 5 out of 5 by this reviewer
Very good experience! The eSIM was easy to set up and worked great in London. It was much cheaper than it would have been to use my own operator there.
Ilona
Rated 5 out of 5 by this reviewer
metulker
Hard to set up but help was good
Rated 5 out of 5 by this reviewer
Reuben
Really happy with HelloRoam. Everything worked as expected, from messaging and Google Maps through to streaming without any issues. Easy to use, reliable and affordable. Would happily use them again when travelling.
Rated 5 out of 5 by this reviewer
Angeline
Reliable connection. Reasonable pricing.
Rated 4 out of 5 by this reviewer
Updated
FAQs About eSIM in London
How much does a SIM card London cost from Singapore?
A HelloRoam London tourist sim starts at S$3.65 on the EE 5G network. Coverage reaches Heathrow, Gatwick, the City, Shoreditch, and all key London tourist areas. Activate via QR code before your Changi departure so data is live from the Heathrow Express. No contract on any plan.
What does an eSIM for London cover for Singapore travellers on a UK business trip?
An eSIM for London from HelloRoam covers the full city on EE and 3 5G networks from S$3.65. Set up takes two minutes before your flight. No roaming fees on your Singapore number and no physical SIM card to carry.
Which eSIM is best for Singaporeans travelling to London?
For trips to London, HelloRoam is a simple eSIM choice. Plans start from S$3.65 in SGD with access to local 4G/5G networks across 212+ carrier networks. Activate via QR code in under 2 minutes before departing from Changi Airport. Your Singtel, StarHub, or M1 number stays active through dual SIM while HelloRoam handles data abroad. You get a refund on unactivated eSIMs within 180 days and 24/7 live chat support.
How much does a London eSIM cost compared to Singtel and StarHub roaming?
A London eSIM from HelloRoam costs from S$3.65 for the full plan. Compare that to Singtel DataRoam daily passes and StarHub RoamEasy rates, which typically cost S$15 to S$30 per day. HelloRoam connects to local networks in London at local data prices, with no daily roaming surcharges and no carrier contract. All plans include local 4G/5G access with no overage charges.
Which local mobile networks does an eSIM use in London for Singapore travellers?
An eSIM for London from HelloRoam connects to local 4G/5G carrier networks. Your handphone picks the strongest available signal the moment you land. Coverage spans major cities, highways, and most rural areas. HelloRoam has direct partnerships with local networks globally, so you get data speeds comparable to a local prepaid SIM card in London.
How do I set up a HelloRoam eSIM before departing Changi Airport?
Buy your London eSIM before you leave Singapore in three steps. First, select your plan at helloroam.com and complete checkout in SGD. Second, open your handphone Settings, tap Add eSIM or Add Mobile Plan, and scan the QR code from your email. Third, your eSIM installs in under 2 minutes. Set it up the night before your flight from Changi and land connected.
Does my iPhone or Android handphone support a London eSIM?
iPhone XS and all newer models support HelloRoam eSIM in London. iPhone 13 and later models support dual eSIM, so your Singtel or StarHub line stays active for calls while HelloRoam handles travel data. For Android, Samsung Galaxy S20 and newer, Google Pixel 3 and later, and most 2019+ Android handphones support eSIM. Check your handphone Settings for an Add eSIM option to confirm compatibility.
What is the best eSIM for London for Singapore travellers?
HelloRoam is a strong choice for Singapore travellers visiting London. Plans connect on EE, Vodafone UK, O2 UK, and Three UK 4G/5G networks from S$3.65 (S$ equivalent). Buy before your Changi departure, scan the QR code at home, and arrive in London already connected.
Does HelloRoam eSIM work in London?
HelloRoam eSIM works in London on EE, Vodafone UK, O2 UK, and Three UK 4G/5G networks. Activate at home before your flight from Singapore. Connect the moment you clear immigration at London Heathrow Airport without queuing for a local SIM card. Plans start from S$3.65.
Which networks does HelloRoam use in United Kingdom?
HelloRoam connects on EE, Vodafone UK, O2 UK, and Three UK in United Kingdom. 4G/5G coverage is available across London and the wider region. Your phone picks the strongest signal automatically. No manual network switching is needed. Buy your plan before your Changi departure and arrive connected.
Is HelloRoam cheaper than Singtel or StarHub roaming in London?
HelloRoam eSIM for London starts at S$3.65, which is less than Singtel, StarHub, and M1 roaming charges of S$5 to S$20 per day. For a week-long trip, the savings are substantial. Buy before your Changi departure and skip the daily roaming bill entirely.
How do I activate a London eSIM from Singapore?
Purchase your plan on helloroam.com, scan the QR code in your phone Settings under Mobile Data or SIM management, and enable data when you arrive in London. The process takes about five minutes on Wi-Fi at home before your flight.
How much data do I need for a trip to London?
A week in London using Google Maps, WhatsApp, and social media typically uses 3 to 6 GB. Business travellers making video calls or streaming should choose a 10 GB plan for comfortable headroom. Singaporeans staying over 10 days often opt for the 20 GB tier.
Is there 4G/5G coverage in London?
London has 4G/5G coverage across its main districts, hotels, and tourist areas via EE. HelloRoam eSIM connects on the strongest available signal automatically. Buy before your flight from Changi. Connect from the moment you land at London Heathrow Airport. No manual configuration required.
Does HelloRoam eSIM work at London Heathrow Airport?
HelloRoam eSIM connects at London Heathrow Airport (LHR) as soon as your phone registers on the United Kingdom network after landing. No airport Wi-Fi queue and no SIM kiosk needed. You are connected from arrivals. Activate at home in Singapore before your flight for the smoothest experience.
