So damn busy!
The food and food choice is excellent. It's a global city and the quality is good. After a point, the quality is negligible in my opinion.
Restaurants are mostly too expensive, housing obviously also insanely expensive. Transport is interesting in that it works when it wants but it's expensive, mostly filthy.
It's a fast paced city. Soon as you get outside of London things are calmer. But within, you better not get caught walking slow or wasting time fumbling with keys,cards or serving coffee too slow.
The people have gotten worse and I think it's a combo of imported US beliefs, stripping of power from parents, teachers, genuine cops, and shit education. I can't blame immigrants because even some locals act like idiots and don't take care of their own property let alone public stuff.
It is true though, you won't always hear a proper English accent all the time or even the language. You might hear Euro accents and languages, Chinese, Urdu, Arabic, etc. It's global. Even born and raised Londoners have accents or twangs heavily influwnced by home language (but thats for any city). But you definitely have pockets e.g. Southall stations and vicinity are heavily south Asian with other ethnicities mostly people trying to get to the airport! You will notice this on transport every morning/evening.
It's an interesting place. It's a bit shit these last few years, but the jobs are here.
Tap water is definitely surprising. But so many foreigners still won't drink it. Stuck in their ways.