Shout out to the nibblers, the top downers, the insider outers, the let-it-melt-in-the-mouthers. The all-the-way-arounders, the inside excavators and the gone in one biters. McVitie's are the "True Originals" of the biscuit world. We've been crafting the UK's favourite biscuits and cakes since 1839.. McVitie's Jaffa Cakes: Chocolate on top, sponge on the bottom, and that tangy orangey bit in the middle. Suitable for Vegetarians. McVitie's.