Bear Grylls has revealed he secretly led an expedition to Mount Everest earlier this year in a bid to recover the body of Michael Matthews - the late brother-in-law of Pippa Middleton.
Michael, who is Spencer Matthews' brother, died in a mountaineering accident in 1999 aged 22, just hours after becoming the youngest ever Briton to conquer the world's highest peak.
The previous record had been set a year earlier by Bear himself, who reached the summit at 23.
