The Concours of Elegance began in 2012, showcasing sixty of the world’s finest cars at Windsor Castle to celebrate the Queen’s Diamond Jubilee. Since then it has moved to St James’s Palace and Hampton Court Palace, before heading to the Palace of Holyroodhouse in Edinburgh in 2015. This year’s fifth edition of the Concours returns to Windsor Castle as part of a celebration of Her Majesty The Queen’s 90th birthday. The Main Concours Sixty of the world’s rarest cars will gather in the exclusive Quadrangle at Windsor Castle this September – the full list of which is revealed by the Concours Steering Committee today. A 1900 Daimler 6hp owned by Her Majesty The Queen represents one of the earliest cars in attendance, first bought by King Edward VII as the first Royal motorcar.