A cameraman who died following a mid-air crash while filming a world record attempt by 'Human Swan' Sacha Dench had raised concerns about stress before the tragedy, an inquiry has heard.

Dan Burton, 54, died after his paramotor was in collision with one flown by colleague Ms Dench, a climate activist, in the Highlands in Scotland on September 18 2021.

Ms Dench, an Australian biologist known as the 'human swan' for how she follows swans migrating from Russia to the UK, was trying to travel 3,000 miles around the UK by paramotor to highlight climate change ahead of the Cop26 conference.

She survived but suffered serious injuries in the crash, which occurred near Loch Na Gainmhich in Sutherland, Caithness.

A fatal accident inquiry at Tain Sheriff Court today heard that concerns had been raised about stress by those involved in the expedition including Mr Burton, due to a '24/7' workplace culture.