Coca-Cola, Cadbury and Heinz are among around 800 firms who will have to re-apply for a Royal Warrant.
Retailers Fortnum & Mason and Waitrose are also among those that advertise the late monarch’s coat of arms on their stores and packaging.
According to the Royal Warrant Holders Association (RWHA), warrants became void when the Queen died, with its website stating: “The Royal household will review warrant grants upon a change of the reigning sovereign.”
