Arrange sponge cake cubes at the bottom of a large glass bowl. Sprinkle lightly with sherry, brandy, or reserved fruit syrup.
Add a layer of fruit cocktail evenly over the cake.
Spoon over cubes of prepared jelly for a colourful layer.
Pour custard on top and spread evenly.
Add another layer of cake, fruit, and custard if your bowl is deep enough.
Finish with whipped cream, smoothing over the top.
Decorate with glacé cherries and toasted almonds.
Chill for at least 2 hours before serving to allow flavours to meld.