Chicken on a Raft = egg (howsoever cooked) on fried bread or toast

Babies' Heads = individual steak and kidney puddings

A Spithead Pheasant = a Kipper

Trainsmash = tinned tomatoes and streaky bacon

Harry Thickers = thick pea and ham soup

Hammy/Eggy/Cheesey = self explanatory ( in Holland, an "Uitsmijter " )