Ive been to London a few times. I think almost every pub has fish and chips. The fish and chips at the carry away places is usually not very good. Or at least that was my experience. I was at one place that made sausages battered and deep fried.That was actually pretty good.
Indian food in London is fantastic too. Just wonderful. Also, Dim Sum in London is really great. There are a couple places in their “China Town” which is just adjacent to Lester Square.
I miss London, I hope to go back there someday.