EXCLUSIVE: Prince Harry will mark his 40th birthday this Sunday with a private celebration in Montecito, surrounded by family and friends. However, he is also planning a rather unusual afterparty for himself and his pals.

Express.co.uk has learned that the Duke of Sussex has organised a getaway to the Californian mountains near his home with a few of his closest mates.

Prince Harry, 39, is set to tackle the Montecito peak which is part of the Cold Spring Trail in California, just a few miles from the mansion he shares with wife Meghan and their two children, Prince Archie, 5, and Princess Lilibet, 3.

By Nathan Kay – Weekend Editor (Royal)