Royal Warrants are granted to people or companies who have regularly supplied goods or services for a minimum of five consecutive years to The Queen, The Duke of Edinburgh or The Prince of Wales. They are advised by the Lord Chamberlain, who is head of the Royal Household and chairman of the Royal Household Tradesmen’s Warrants Committee. Each of these members of the Royal Family can grant only one warrant to any individual business.
In the Early 1950s, Pye Telecommunications installed the PTC112 remote mount mobile into the car belonging to HRH Prince Philip, The Duke of Edinburgh. Later this was replaced with the higher power PTC114 and subsequently with other radiotelephone products.
As a result Pye Telecom became entitled to display the Royal Warrant of HRH The Duke of Edinburgh in the 1950s and 1960s. This small cast and painted aluminium Royal Warrant Shield measures 198 x 180 mm and would have been displayed on the outside of a Pye Telecom office.
A larger version of this Royal Warrant Shield was positioned over the doorway of the main entrance to the Ditton Works premises.