Best eSIM for Working Holiday in the UK
My friend Sarah moved to London on a Tier 5 Youth Mobility Visa last year. She's Australian, like me, and her biggest surprise wasn't the weather or the cost of a pint. It was the absolute nightmare of sorting out phone connectivity.
She walked into a Three store on day two and they wanted a UK bank account and proof of address before they'd give her a post-paid plan. She didn't have either. She'd literally just arrived.
She ended up on a pay-as-you-go SIM with 4GB for 15 pounds a month. Meanwhile, her Australian Optus plan was still charging her $5/day every time she accidentally used data before turning roaming off. (The real cost of eSIM vs roaming is eye-opening when you do the maths.)
There's a better way to handle this. Here's what I'd do now, knowing what I know.
The Working Holiday Phone Problem
When you move to the UK on a WHV, you're stuck in a weird middle ground:
- You need a UK phone number (for job applications, flat viewings, bank accounts)
- You want to keep your home number (for bank verifications, family, and everything tied to that number)
- You can't get a UK contract without a UK bank account
- You can't open a UK bank account without a UK phone number and address
See the catch-22?
Most people end up on an expensive pay-as-you-go SIM for the first month while they sort everything out. Some people keep paying for their home carrier's roaming the entire time. Both options are terrible.
The eSIM Solution (First 1-3 Months)
Here's what I'd recommend for the first phase of your working holiday:
Keep your home SIM in your phone. Don't cancel it. Don't remove it. You need it for bank verifications, family contact, and anything tied to your home number.
Get a GOAN eSIM for your data and a UK phone number. This gives you immediate mobile data and a real phone number you can use for job applications, flat viewings, and setting up a UK bank account. No contract, no UK address needed, no waiting.
Cost: $29-39 USD per month for 20GB of data plus a phone number. Compare that to Optus's $5/day roaming ($150/month for basic data) or Three's pay-as-you-go at 15 pounds for 4GB.
Once you've got your UK bank account set up (usually takes 2-4 weeks), your National Insurance number, and a permanent address, you can switch to a UK contract plan if you want. By then, you'll have used your GOAN number for all your initial setup, and you can port it or just switch.
Setting Up a UK Bank Account (The Phone Problem)
Every UK bank requires a phone number during setup. Monzo and Starling (the most working-holiday-friendly banks) need to send you a verification SMS.
If your only number is your Australian one, that SMS might not arrive. International SMS delivery is unreliable between countries. I've heard stories of verification codes being delayed by hours or not arriving at all.
Having a GOAN eSIM with a real phone number solves this instantly. The verification SMS goes to your GOAN number. Done.
Sarah spent 3 days trying to get Monzo verification codes sent to her Optus number. Three days of refreshing, restarting, and getting increasingly frustrated. With a GOAN number, it would have been instant.
The NI Number Application
Your National Insurance number application also requires a phone number. HMRC will call you to schedule an appointment (yes, they actually call). If you only have an Australian number, you might miss the call or get charged international rates to call them back.
Flat Hunting in London
This is where a phone number becomes genuinely urgent. London's rental market moves fast. Listings go up and get snapped up within hours. Letting agents and landlords want to call you, not email you, not WhatsApp you. Call.
Sarah lost a flat because the letting agent called the number on her application (her Australian number), it went to voicemail (because she'd turned off roaming to save money), and by the time she called back the next day, someone else had signed the lease.
A local-ish phone number that you actually answer makes the difference between getting a flat and sleeping on someone's couch for another week.
Weekend Trips from the UK
Here's the bonus: the UK is a launchpad to the rest of Europe. Cheap Ryanair flights to Barcelona, Lisbon, Amsterdam, Dublin. Weekend trips to Paris on the Eurostar. A ferry to Ireland.
If you have a UK-only SIM, your data dies the moment you step off the plane in Europe. You're back to square one, hunting for airport SIM shops or paying roaming charges.
GOAN covers 105+ countries. Your UK data plan works in France, Spain, Portugal, Italy, Greece, everywhere you'd go for a weekend. No new SIM, no extra cost, no thinking about it.
Check out my best eSIM for Europe guide for a deeper comparison of providers if you're planning lots of weekend trips.
The Timeline
Here's how I'd structure phone connectivity for a 2-year UK working holiday:
Month 1-3: GOAN eSIM
- Immediate data + phone number on arrival
- Use for bank setup, NI number, flat hunting, job applications
- Keep home SIM active for verifications
- Cost: $29-39 USD/month
Month 3-12: UK Contract SIM + Home eSIM
- Once you have a UK bank account and address, get a UK contract (GiffGaff, Three, or Voxi are cheapest)
- Switch your home SIM to an eSIM or a minimal plan (just to keep the number alive)
- Keep GOAN for weekend Europe trips, or cancel if you don't travel much
Month 12-24: Evaluate
- By now you know whether you're staying, extending, or heading home
- Adjust plans accordingly
Cost Comparison (First 3 Months)
| Option | Monthly Cost | Data | UK Number? | Home Number Active? |
|---|---|---|---|---|
| Optus roaming | $150+ AUD | Basic | No | Yes |
| UK pay-as-you-go (Three) | $25 AUD | 4GB | Yes | No (removed home SIM) |
| GOAN eSIM | $43 AUD (~$29 USD) | 20GB | Yes | Yes (Dual SIM) |
GOAN is the only option that gives you a usable amount of data, a phone number, AND keeps your home SIM active. That Dual SIM setup is the key to avoiding the catch-22.
What to Set Up Before You Leave Australia
- Check your phone supports eSIM. Use the compatibility checker.
- Set up your GOAN eSIM. Do this at home, on your couch, before the chaos of moving countries.
- Download offline Google Maps for London. The tube map doesn't help you above ground.
- Screenshot your home bank's customer service number. Save it in your contacts. You'll need it when things go wrong at 2am UK time.
- Tell your home bank you're moving overseas. Otherwise they'll freeze your card the first time you use it in London.
The eSIM install guide walks you through the setup step by step. Do it before your flight and land ready to start your new life.
The WHV Community Hack
Join Facebook groups like "Aussies in London" and "Working Holiday UK" before you arrive. People share flat listings, job leads, and tips daily. But scrolling Facebook groups requires data. Don't be the person reading 3-day-old posts on cafe Wi-Fi. Be the person who sees the flat listing 10 minutes after it's posted and calls the landlord immediately.
Connectivity isn't just about convenience when you're starting a new life abroad. It's about speed. The fastest person to respond gets the flat, the job, and the opportunity.
