also tourists, which there's plenty of in London. Roaming is expensive.
Especially nowadays, with Britain out of the EU and "roam like at home" policies no longer in effect.
Especially nowadays, with Britain out of the EU and "roam like at home" policies no longer in effect.
I thought they were generally still in effect. The multiple UK and non-UK networks I'm aware of still allow free roaming across UK and EU etc.