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The UK offers excellent 4G and growing 5G coverage across England, Scotland, Wales, and Northern Ireland. A travel eSIM is the simplest way to avoid eye-watering international roaming charges, especially post-Brexit for EU travellers.
For non-EU visitors, yes. International roaming in the UK is expensive, and a local eSIM plan is significantly cheaper. EU residents who previously enjoyed free EU roaming no longer have that right in the UK after Brexit.
Major networks (EE, Vodafone, Three, O2) cover most urban and suburban areas well. The Scottish Highlands, remote Lake District, and rural Northern Ireland have patchier 4G. Most tourist attractions and transport links are well covered.
A 5–7 day plan with 3–5 GB is sufficient for most London visits. If you are travelling beyond London to Edinburgh or Manchester, a 10–15 day plan with more data accommodates navigation and transport apps across longer distances.
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