Honestly I know this sound snarky but it’s 100% true - Three has become so unbelievably bad in East London lately I’d struggle to know if it was affected by this outage or if it was business as usual for them. I could go on about how broken their billing and app and site were but meh… need to change provider.
Three has been fucked for years on 5G:
https://community.three.co.uk/t5/Broadband/Intermittent-conn...