Jaffa Cakes
McVitie's did not register the name "Jaffa Cakes" as a trademark. For this reason, other  biscuit manufacturers and supermarkets have made similar products under the same name. The product's classification as a cake or biscuit was part of a VAT tribunal in 1991, with the court finding in McVitie's favour that the Jaffa cake should be considered a cake for tax purposes. In 2012 they were ranked the best selling cake or biscuit in the United Kingdom.