A new portrait of the Prince of Wales has been released by Clarence House to mark his birthday.

       Prince Charles, who turned 73 on Sunday, is pictured smiling on a bench at Highgrove, his Gloucestershire home.

       The picture was taken in the summer, according to Clarence House.

       The photographer was Hugo Burnand, who took wedding pictures for Charles and Camilla in 2005 and the Duke and Duchess of Cambridge in 2011.