Three UK built its reputation partly on Go Roam, which let customers use their UK allowance across Europe and dozens of other destinations at no extra cost. After Brexit, Three reintroduced roaming charges: customers who took out or upgraded their plan after a cutoff, generally from around 2022 onwards, typically now pay a daily fee to use their allowance in Europe, while some older plans may still include the original free Go Roam. In short, whether you roam free or pay a daily charge depends entirely on which plan you are on, and the only way to know for sure is to check with Three.
That single distinction, old plan versus new plan, is the whole story, and it is why two Three customers on the same trip can have completely different bills. This guide explains what Go Roam was, what changed, how to work out which side of the line your plan sits on, and when a prepaid travel eSIM is the cheaper and simpler way to stay connected in Europe.
In this guide:
- What Go Roam was
- What actually changed after Brexit
- How to check which plan you are on
- Three roaming vs a travel eSIM: a quick comparison
- When Three roaming still makes sense
- When a travel eSIM wins
- How to use an eSIM without losing your UK number
Key takeaways
- Go Roam originally let Three customers use their UK allowance across Europe and many destinations at no extra cost.
- After Brexit, Three reintroduced roaming charges for newer plans; many plans taken out or upgraded from around 2022 onwards now add a daily fee for Europe.
- Some older grandfathered plans may still include the free Go Roam benefit, so it comes down to your specific plan.
- Do not assume; log in to your Three account or ask support to confirm your daily fee and the list of included destinations.
- For short trips on a newer plan, a one-off prepaid Europe eSIM is frequently cheaper and more predictable than paying a daily roaming fee.
What Go Roam was
Go Roam was Three UK’s roaming benefit that, at its peak, let you use the minutes, texts, and data from your normal UK plan while abroad without paying anything extra. It covered the European Union and stretched well beyond it, taking in a long list of popular holiday and business destinations. For a lot of travellers it was the single best reason to be with Three: land in Spain or Italy, switch your phone on, and your data just worked at no additional cost.
The appeal was simplicity. You did not buy anything, install anything, or think about local networks. Your existing allowance followed you across borders. That convenience set expectations, and it is exactly why the change afterwards caught so many people out. People who had roamed free with Three for years assumed it would always be that way, and some only discovered the new charges when a fee appeared on a bill after a trip.
What actually changed after Brexit
When the UK left the EU, the rules that had guaranteed surcharge-free roaming across the bloc no longer bound UK networks. Providers were then free to decide their own roaming policies, and over time most of the big UK networks brought some form of roaming charge back for newer customers. Three followed that pattern.
The key thing to understand is that the change was not applied to everyone at once. Instead, it was tied to when you took out or last changed your plan. Broadly, plans taken out or upgraded from around a cutoff point, generally cited as 2022 onwards, moved to a model where using your UK allowance in Europe carries a daily fee. That fee is charged per day that you actually use your phone abroad, so a two-week holiday can mean up to fourteen daily charges.
We are deliberately not stating an exact current daily charge here, because these fees and the exact list of included destinations get revised from time to time. As a rough guide, the daily fee on newer plans tends to be around a couple of pounds per day, but treat that as a ballpark only. Always confirm the live figure and the covered-country list with Three directly before you rely on it. What matters for planning is the shape of the cost: a repeating daily charge for every day you use data abroad, rather than the old flat, free benefit.
Meanwhile, some customers on older plans may have kept the original Go Roam benefit, essentially grandfathered in on the terms they signed up under. This is why you cannot generalise about Three roaming any more. There is no single answer that applies to all Three customers; there is only the answer for your particular plan.
How to check which plan you are on
Because the outcome hinges on your specific plan, checking is not optional; it is the whole game. There are three reliable ways to find out, and none of them takes long.
First, log in to the Three app or your online account and open your plan or contract details. Look for any mention of roaming, Go Roam, or a daily roaming fee for Europe. Some accounts spell this out clearly; others bury it, so read carefully.
Second, dig out your original contract or welcome documentation and search it for the words roaming or Go Roam. The terms you agreed to at sign-up are what govern your roaming, so this is often the clearest source of truth, especially if you have had the same plan for years.
Third, and most dependable if the first two are ambiguous, contact Three support directly and ask two plain questions: does my plan charge a daily roaming fee to use my allowance in Europe, and exactly which destinations are included. Get the answer before you travel, ideally at least a week ahead, so that if the news is a daily fee you have time to line up a cheaper alternative rather than discovering it at the airport.
The golden rule is simple: verify with your provider. Do not assume your roaming is still free just because it was on your last trip or because a friend on Three roams for nothing. Their plan and your plan may sit on opposite sides of the cutoff.
Three roaming vs a travel eSIM: a quick comparison
Here is how the three options stack up at a glance for a typical Europe trip. The exact Three figures depend on your plan, so treat the roaming rows as the shape of the cost rather than a quote.
| Feature | Older Go Roam plan | Newer Three plan | Prepaid travel eSIM |
|---|---|---|---|
| Cost to use in Europe | Included, no extra cost | Daily fee per day used (confirm with Three) | One-off price for a fixed data bundle |
| Cost model | Flat, part of your plan | Repeating daily charge | Single upfront purchase, no daily add-on |
| Data source | Your UK allowance | Your UK allowance | A separate prepaid data bundle |
| Bill-shock risk | Low | Higher on longer trips | None; you pay before you travel |
| Keep your UK number | Yes | Yes | Yes, on a second line |
| Setup needed | None | None | Install and activate the eSIM once |
When Three roaming still makes sense
Three roaming is not automatically the wrong choice; sometimes it is genuinely the easiest option. If you are confident you are on an older plan that still includes free Go Roam, there is often little reason to change anything for a European trip. Your allowance travels with you at no extra cost, and you get calls, texts, and data on your usual number without any setup.
Even on a newer plan with a daily fee, roaming can be fine for very short trips. If you are away for a night or two, a small number of daily charges may be perfectly acceptable for the convenience of doing nothing. The maths only turns against you as the days add up. A single overnight is one thing; a two-week holiday paying a daily fee every day is where the total starts to look expensive next to a one-off eSIM.
When a travel eSIM wins
For most longer trips on a newer plan, a prepaid travel eSIM is the cheaper and calmer choice. Instead of a daily fee that repeats for every day abroad, you buy a single Europe eSIM plan up front for a fixed amount of data that works across a wide range of European countries. You know the exact price before you leave, and there is nothing to add to your monthly bill and no surprise line item when you get home.
The bill-shock difference is the big one. With a daily roaming fee, your final cost depends on how many days you end up using your phone, which is easy to underestimate. With a prepaid eSIM the price is settled before departure; you have already paid, so there is no meter running. It is a one-off purchase, not a subscription and not a recurring plan, so nothing keeps charging you after your trip ends.
An eSIM also travels well across borders. A Europe plan typically spans many countries, so a trip that crosses from France into Spain into Portugal stays on one bundle rather than triggering separate arrangements. If you want to compare options for a multi-country route, our guide to the best eSIM for Europe walks through what to look for. And if you specifically want to sanity-check Three roaming against an eSIM in pounds and pence, see our breakdown of UK network roaming charges versus an eSIM, which applies the same logic across UK networks.
How to use an eSIM without losing your UK number
A common worry is that switching to an eSIM means losing your normal number. It does not. Modern phones run two lines at the same time, so you keep your Three SIM active for calls and texts on your UK number while a travel eSIM handles your data abroad.
The setup is quick and you do it once, ideally at home on wifi before you fly. You install the Europe eSIM, set it as your data line, and turn data roaming off for your Three line so it cannot rack up charges in the background. Your Three number stays reachable for calls and texts the whole time you are away, while your data runs on the prepaid eSIM at a price you already know.
That combination gives you the best of both: your familiar number for anyone trying to reach you, and predictable, prepaid data that sidesteps a daily roaming fee entirely. When you get back, you switch the eSIM data off, and your phone carries on exactly as before, with no lingering subscription and nothing to cancel.
The bottom line is the same one we started with. Check which Three plan you are on, confirm the current daily fee and included destinations with Three directly, and then decide. If you are grandfathered onto free Go Roam, enjoy it. If you are on a newer plan facing a daily charge, a one-off prepaid Europe eSIM is usually the cheaper, simpler, and more predictable way to stay connected. When you are ready to compare plans for your trip, start on the Viasimo home page or jump straight to a Europe eSIM.
