He was given instructions, but still made it all on his own and it really was pretty good!
It was fashioned on Mary Berry's Flag Traybake but just with a standard sponge.
He mixed 24oz margarine with 24oz caster sugar, 24oz self raising flour, 12 eggs and 6 tsp of baking powder and poured it into a large roasting pan. It took almost an hour to cook at 180C.
He then made a basic butter cream with 16oz butter and about 16oz icing sugar and a splash of milk.
Once the cake was cool he spread the icing all over the top and placed raspberries and blueberries on it in a union jack pattern.