Divide custard into two medium bowls, add melted Nestlé Bakers Choice Dark Melts into one bowl, whisk well; add melted Nestlé Bakers’ Choice Milk Melts into another custard bowl, whisk well and set aside. Using an electric mixer, whip Nestlé Highlander Sweetened Condensed Milk and thickened cream into soft peaks.
Arrange half of the sponge cake over the base of a 3 litre (12 cup) capacity serving dish. Spoon ¾ of the prepared dark chocolate custard over the sponge base; top with ½ of the set jelly, ½ whipped cream mixture and ½ of the berries. Repeat, using sponge cake, all the milk chocolate custard, jelly, whipped cream mixture, and ½ of berries.
Finish off with remaining dark chocolate custard and decorate with remaining berries. Dust with icing sugar if desired.