Royal Warrant-holders are a select group of companies who have been appointed official suppliers to court. Only the three senior members of the Royal family (Prince Charles, Prince Phillip and Her Majesty) are allowed to bestow the badge in recognition of excellence and superior quality. With the Queen still reigning strong, we thought it appropriate to present our pick of the men’s style marques endorsed by the House of Windsor. From heritage knits at Pringle of Scotland to the red and gold uniforms of the Queen’s bodyguard at Gieves & Hawkes, here’s how you can give your wardrobe the royal seal of approval.