What is a royal warrant and which famous companies hold one?

Royal Warrant: The History Behind the Legendary Seal of Approval

Horrifying photos show mass grave of 440 victims with nooses round

Royal Warrant: The History Behind the Legendary Seal of Approval

Queen Elizabeth's Favourite Brands Face Losing Royal Warrant

My neighbour is trying to kidnap my cat - they keep saying my pet

Royal Warrant Holders Association

Cahill's - Our Blog - Barbour and the Royal Warrants - Cahill's

Royal warrant hi-res stock photography and images - Alamy

Royal Warrant Holders: A Guide & List of Famous Companies

All Good Things: The Dish on Royal Warrants

Branding alert for Royal Warrant holders

What happens now to Royal Warrants of Appointment?

Which Brands hold a Royal Warrant? - Quora