MTI security unit Global Secure Systems has become the latest channel firm to be awarded a Royal Warrant, joining a list of companies that already includes Azzurri and TSG.
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Only three royals, the Queen, the Prince of Wales and the Duke of Edinburgh, are entitled to grant Royal Warrants, which are issued on a five year renewable basis to firms that have had a trading relationship with a member of the Royal Family for at least five years.
Surrey-based GSS, works with a range of public and private sector businesses including financial houses and various NHS trusts, but also counts the Queen - or presumably someone acting on her behalf - among its clients.
"The granting of Her Majesty's Royal Warrant is a great honour for GSS ... and a strong endorsement of all the work done for the Royal Household over many years by all the GSS staff," said GSS managing director David Hobson.