The ingredients in McVitie’s Gold Billions Wafer include milk chocolate (43%) made from sugar, dried whole milk, cocoa mass, cocoa butter, emulsifiers (E442, E476), soy lecithin, salt, and flavoring. The golden caramel-flavored coating (24%) consists of sugar, cocoa butter, dried whole milk, caramel (which includes dried whey, maltodextrin, palm fat, and sugar), dried skimmed milk, butter oil, emulsifier (soy lecithin), salt, and flavoring. The bar also contains hydrogenated palm oil, wheat flour, dried skimmed milk, dried whey (milk), lactose, starch, and dried egg white.

In terms of allergen information, McVitie’s Gold Billions Wafer contains eggs, milk, soy, and wheat (gluten). It may also contain traces of peanuts and nuts, so those with allergies to these ingredients should exercise caution.