Vanilla custard slice

Custard 61.0% , water 16.3% , cream 8.2% , skimmed milk 5.0% , vegetable oil 3.4% , ke Sugar 2.5% , corn starch 1.9% , E471 1.5% , whey powder 1.3% , Puff Pastry 25.0% , water 0.9% , palm oil 0.8% , rapeseed oil 0.7% , salt 0.6% , E471 0.5% , Fondant Icing 13.0% , sugar 0.4% , water 0.4% , glucose syrup 0.4% , white chocolate 0.3% , Dark Chocolate Topping 0.3%