Swiss police have said the fatal wingdiving accident occurred among a group who were in the region as guests of a company that makes extreme sport films for the internet.
Although police have yet to confirm the victim's identity, he is understood to be Olympic stuntman Mark Sutton.
Police, though, said: "The victim, a Briton, was 42 years old. He was staying in Chamonix (in France) with 20 followers, considered among the best in the world in this discipline."
More top news
Fresh data revealed smartphone and tablet users are increasingly targeted by online crooks.
Children whose parents have divorced are driven to drink or drugs, new research suggests.
Paul Gascoigne has spoken about his ongoing battle with alcoholism, admitting that "the only person who can save me is me".