I spent the last 17ish years in London and was eating out a lot until Covid. There's very little I won't eat except coriander (cilantro - I have the yucky tastes like soap gene) and anything that's a bit too gloopy like, e.g. undercooked eggs, congee and natto
I'm now near Portsmouth, so local seafood isn't really a thing as there's a naval base on one side, international shipping docks and cruise liners on the other and a power station over the way. When I was a kid we'd catch crabs but they'd be oozing black sludge when they got home.
Still good seafood around though. I've been meaning to make a visit to the market below for a while but life has been getting in the way
https://fishathome.co.uk/about/
Cooking wise I have a decent handle on Cantonese food (thanks to an ex), pasta dishes, the usual English stuff like roasts, and I've recently been getting into the stuff no-one wants like livers, kidneys and cheeks. (I'll leave tripe alone though, we are not going to be friends). I'll always be a sucker for a great steak though. Hawksmoor is my favourite restaurant for one of those.