EE vs Vodafone vs O2 vs Three International Plans vs eSIM — Which Is Best for British Travellers?
Before your next trip abroad, you have a decision to make: use your UK carrier's international plan, or switch to a travel eSIM. EE, Vodafone, O2, and Three all offer international roaming options — but the costs, speeds, and limitations vary significantly, and none of them are as straightforward as they appear. This guide breaks down every option side by side so you can make the right call before you fly.
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Explore PlansEE vs Vodafone vs O2 vs Three vs AloOui eSIM — Full Comparison
| Feature | EE | Vodafone | O2 | Three | AloOui eSIM |
|---|---|---|---|---|---|
| Europe daily charge | £2/day | £1/day | £1.99/day | Free (Go Roam) | From $3.66 for 7 days |
| USA daily charge | £5/day | £5/day | £5/day | £5/day | From $4.53 for 7 days |
| 14-day Europe trip | £28 | £14 | £27.86 | Free* | From $7.32 |
| Data speeds | 4G LTE | 4G LTE | 4G LTE | Capped speeds | Full 4G/5G |
| Hotspot sharing | Limited | Limited | Limited | Limited | Included |
| Risk of bill shock | Medium | Medium | Medium | Low (Europe) | None — fixed price |
| No ID required | Account login | Account login | Account login | Account login | No ID required |
* Three Go Roam includes Europe in your allowance but applies data speed caps and fair use limits. Charges apply outside Go Roam destinations.
Breaking Down Each UK Carrier's International Option
EE Europe Pass — £2/day in Europe, £5/day elsewhere
EE's Europe Pass charges £2 per day for each day you use your phone in 47 European destinations, and £5 per day in the USA, Canada, Australia, and other long-haul destinations. The charge triggers automatically the moment you use your phone — even for a single WhatsApp message.
Verdict: Convenient but adds up quickly. A 14-day European holiday costs £28 in day pass fees on top of your regular monthly bill. Long-haul trips are significantly more expensive at £5/day.
Vodafone Roam-Free — £1/day in Europe, £5/day elsewhere
Vodafone's Roam-Free option charges £1 per day in 48 European destinations — the cheapest European roaming option among the major UK carriers. Outside Europe, the charge rises to £5/day in destinations including the USA, Australia, and South Africa.
Verdict: The best value carrier option for European travel at £1/day, but still £14 for a 14-day trip. For long-haul destinations, it is as expensive as every other carrier at £5/day.
O2 Travel — £1.99/day in Europe, £5/day elsewhere
O2's Travel add-on charges £1.99 per day in Europe and £5/day in over 50 destinations worldwide. Like EE and Vodafone, the charge applies automatically on first use each day. O2 also applies a fair use data cap on roaming.
Verdict: Mid-range pricing for Europe at £1.99/day (£27.86 for 14 days). No advantage over competitors for long-haul travel.
Three Go Roam — Free in Europe, £5/day elsewhere
Three's Go Roam includes roaming in 71 destinations within your existing UK allowance at no extra daily charge — the most generous European roaming offer among UK carriers. However, Go Roam applies speed caps and a 12GB fair use limit per month on roaming. Outside Go Roam destinations, charges of £5/day apply.
Verdict: The best carrier option for European travel if you are already a Three customer. However, speed caps and data limits apply, and long-haul destinations cost £5/day like every other carrier. If you are not already on Three, switching contracts is not worth it just for roaming.
AloOui Travel eSIM — From $3.66
An AloOui eSIM gives you a local data plan in your destination country at a fixed price. Full 4G/5G speeds, hotspot sharing included, instant QR delivery by email, no ID required. Your UK number stays active on your primary SIM for calls and texts.
Verdict: The best value option for any long-haul trip and competitive for European travel. A 14-day Europe trip costs from $7.32 with AloOui vs £14 with Vodafone or £28 with EE. For the USA, AloOui is significantly cheaper than all four UK carriers at £5/day.
When Does a UK Carrier International Plan Make Sense?
In fairness, there are situations where sticking with your carrier is the right call:
- Short European trips on Three — if you are already a Three customer, Go Roam is genuinely free in Europe for trips within the fair use limit
- Trips of 1 to 2 days — the setup time for an eSIM may not be worth it for a single overnight trip
- Emergency use only — if you only need your phone for occasional calls and minimal data, a day pass may be acceptable
For any long-haul trip, or any European trip where you are not on Three, a travel eSIM will almost always be cheaper and faster.
AloOui Plans — Choose Your Destination
Every plan includes instant QR delivery, hotspot sharing, and no ID requirement.
More Guides for British Travellers
- The British Traveller's eSIM Playbook — Every Trip and Budget
- How to Avoid Roaming Charges When Travelling Abroad from the UK
- Does My UK Phone Work Abroad? eSIM vs Roaming Explained
- Best eSIM for British Travellers Going to the USA
- Best eSIM for Europe Travel — Plans for 30+ Countries
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Frequently Asked Questions
Is AloOui eSIM cheaper than EE's Europe Pass?
Yes, for most trips. EE charges £2/day in Europe. A 14-day trip costs £28 with EE. AloOui's Europe Lite plan covers 7 days for $3.66 — two of those plans for a 14-day trip costs $7.32, which is significantly less than £28 at current exchange rates.
Is Three Go Roam actually free?
In Europe, yes — within Three's fair use limits. Three applies a 12GB data cap per month on roaming and may throttle speeds. For light to moderate data users on short European trips, Go Roam is genuinely good value. For heavy data users, long trips, or destinations outside Go Roam coverage, a travel eSIM is more reliable and often cheaper.
Can I keep my UK number while using AloOui abroad?
Yes. Your UK number stays active on your primary SIM slot for calls and texts. The AloOui eSIM handles data on a second slot. Both run simultaneously — you do not lose access to your UK number.
Do I need to cancel my UK carrier plan to use AloOui?
No. AloOui runs alongside your existing UK carrier plan. You keep your UK number and plan active — you simply disable data roaming on your UK SIM and use AloOui for data while abroad.
How quickly do I receive my AloOui eSIM after purchase?
Instantly. Your QR code is delivered by email within seconds of purchase, 24 hours a day. No waiting, no store visit, no ID required.
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