Grease and line a 20cm x 11cm x 6cm loaf pan. Line with baking paper extending well above edges on all sides. Or you can use foil.
Over low heat, melt chocolate in the cream and stir until well mixed and smooth. Allow to cool for a few minutes.
Put fudge mix at the bottom of the pan. Freeze for half an hour.
Let ice-cream stand for 10 minutes until slightly softened. Meantime chop honeycomb bars, reserving some for decorating top. Mix chopped bars and ice cream together. Spoon over chocolate in pan and smooth.
Press chopped biscuits on top of the ice-cream. Cover and freeze overnight.
Remove ice-cream from freezer five minutes before serving. Turn out on serving plate and arrange more honeycomb over top as decoration.