UK connectivity spans four MNOs plus MVNOs sharing their radio—tourist SIMs, eSIMs, and pay-as-you-go packs differ by data speed and EU roaming footnotes.

Pick by

  • Supported 4G bands for your phone
  • Hotspot rules and fair-use caps
  • Whether you need EU roaming after Brexit-era policy changes

Install eSIM on Wi-Fi before landing; keep a backup offline map.