If it is, ingredients are
Strawberry Flavour Jelly Crystals:
Sugar, Gelling Agen (Carageenan),
Coulours, (Beetroot Red, Annatto), Adipic Acid, Cream of Tartar, Thickener (Carboxymethyl Cellulose), Flavouring, Sweetner (Sodium Saccharin).
Custard Powder:
Cornflour, Salt, Colour (Annatto), Flavouring.
Trifle Topping Mix
Hydrogenated Vegetable Oil, Sugar, Emulsifiers (Propane-I, 2-diol esters of Fatty Acids, Soya Lecithins), Modified Starch, Whey Powder (from milk), Lactose (from milk), Milk Proteins, Thickener (Carboxymethyl Cellulose),Flavourings, Colour (Beta-Carotene)
Sponge FIngers:
Sugar, Wheat flour, Egg, Glucose Syrup, Raising Agent (Ammonium Hydrogen Carbonate), Flavouring.
Really think it would take years for most of that lot to go off. So I'd use it.