The biggest difference in Fish and Chips over here is that they don't cook them for you on demand. Either the fish or the chips or both sit for-fucking-ever in "warming" trays that make them soggy and horrible.
I was living in Herne Hill for a while which is only famous for a F&C place that apparently is the best in London. It was crap. They cooked your fish for you - but the chips still came from the warming tray. And one fish and a scoop cost £8. And they didn't put salt on it at all.
Yeah - and they use diff oil and fish. Why - o why - on an island smaller than NZ - can you not get nice, fresh fish?
Yes I'm bitter. One of my flatmates just went home for 2 weeks and had nice food the WHOLE time.