It's called the "ashamed colonizer fish and chips". It uses only homegrown ingredients. Britons are just too ashamed of their actions to make us of stolen food in their dishes.
God, I fucking love curry. How people can think English food is bland completely baffles me. Fuck, even roast beef comes which extremely hot mustard or horseradish.
Fish and chips was invented by Jewish immigrants. Our food is a melting pot of different influences from a myriad of different cultures, and we like it that way.