Thanks for your reply Gg.
Looking through my now dusty old books, have found a recipe in a copy of The Wartime Kitchen & Garden Book. Forgot where it was 'filed'
Anyway, here is the recipe if anyone would like to try it..........
8oz SR flour
2 level tspns baking powder
3 rounded tspns custard powder
pinch salt
3oz lard or margarine
2 rounded tblspns caster sugar
Milk to mix
Mix flour, baking powder, custard powder, salt together
Rub in fat & sugar and add enough milk to mix
Spread into two sandwich tins
Bake at 350F or gas 4 for 10-15 mins
Sounds easy enough even for me!