Place the centre layer of cake on top. Put in the chiller for jelly to set. Also place remaining jelly mixture in freezer to thicken save 1 tbsp for top. Repeat as for above. Cover with top layer of cake.
Sprinkle remain crumbs, decorated with chopped strawberries.
Chill for the topmost layer to set. To serve very carefully insert a wide spatula under the bottom layer. Hold the butter paper tight around the cake and transfer to a cake plate. Carefully peel off butter paper. Serve immediately with or without vanilla ice-cream.