When Queen Elizabeth II passed away at her Scottish estate in Balmoral, more than 600 Royal Warrants passed with her.
These symbols on packaging or websites not only show that the companies meet exacting standards, but have also supplied the Royal Household on a regular basis.
The Royal Warrant Association has said, however, that these businesses must now reapply for their warrants. They are reviewed after a change in reigning sovereign but companies can continue to use the Royal Arms in connection with the business for up to two years.
According to the Royal Warrant Holders Association, "The Royal Household will review warrant grants upon a change of reigning Sovereign."
Many of the products affiliated with the Queen are very high-end; Fortnum & Mason goodies, champagnes and equine supplies. Others include household items such as Marmite, Twinings Tea, Tate & Lyle sugars, Cadbury's chocolates and Heinz sauces.
Chalmers Bakery, Glencraft, Langstane Press, Walkers Shortbread and Donald Russell are among her North-east warrant holders.
However, sustainability - and the environment - are the words that keep coming up when speaking to businesses about the potential desires of King Charles III.
The 180 warrants Charles issued as Prince of Wales will continue now that he is King because they go with the household, not the title.