To get the true British experience with fish and chips (not "fries") you need to fry both the fish and the chips. Chips cooked in any other way (such as an oven or microwave) are invariably hard in the middle as they are not exposed to heat long enough to cook them through. Chips served on a plane would not be fried, therefore they would not be cooked properly.
My Grandfather's family used to have a fish and chip shop and he taught me the proper way to cook fish and chips
Another bad way with chips is to put the raw potatoes into fat which is too hot and smoky. This has the effect of browning the outside of the chip but leaving the inside raw as the outside becomes overcooked by the heat before the inside has had time to cook properly.
Sabena and Sobelair - gone but never forgotten.
Louise