So, the legends are true, and there are actually people south of the river? ;)
Seriously though, in my flat in SE15, I had some decent DSL (as good as it can be, with pitiful bandwidth but it was really stable). I planned to get Hyperoptic to lay some fibre, but then I moved to a different place with 10/10 FTTH.
My pet peeve in London is the patchiness of 4G and 5G coverage. It’s a bloody big city, and yet I regularly get no bars at all in zones 1 and 2. It’s the same for broadband: some streets are great, other very much less so.
I've got AT&T GigE here in San Jose, but he's had it for longer than I have.