Oh I should have said Fish Pie varies quite a bit.
One type is chunks of fish in a parsley sauce covered by soft mashed potato.
The other type is the same sort of thing but covered in puff pastry.
The first type is the more traditional.
A good fish pie should contain at least three different types of fish, say Haddock, Salmon chunks and Mackeral. The fish should be skinned and filleted and cooked in the pie dish it is served in.
The quality in London can vary from something quite unpleaseant that has come out of the deep freeze and been microwaved to a delicious hand made pie with fish fresh from Billingsgate that morning.
Most of the big chain food pubs serve stuff straight out of the microwave - tasteless gloop !