Former world skeleton champion and four-time Winter Olympian Kristan Bromley has announced his retirement from the sport.
The 43-year-old, who was until recently based in Sheffield, won the overall world title in 2004 then became the first slider to win the world, European and overall titles in the same year in 2008.
Bromley has not competed at the top level since he finished eighth at the Sochi Winter Games in 2014.
Bromley said: "I'm very proud of what I've achieved, including representing my country at over 100 World Cup and championship events and four Olympic Games, but now is the right time to move on to other things.
"It is only now that I'm reflecting and thinking that it's been an amazing ride. Winning the treble didn't sink in at the time but that was the season I was the most proud of.
"It was the first time in the history of the sport that anyone had won all three competitions in the same year and it came at a time when pretty much everybody had written me off."
Despite retiring from racing, Bromley will remain involved in the sport through his sports technology company Bromley Sports, which designs sleds for a number of leading athletes and has its headquarters in Rotherham.
Meanwhile Bromley's partner Shelley Rudman will not be part of the forthcoming World Cup season after deciding to extend her maternity leave.
But Rudman, 34, who has also not competed since Sochi, has not ruled out a return to the sport.
Rudman, who won an Olympic silver medal in Turin in 2006, said: "I love the sport and competing. I intend to carry on with my maternity leave but I haven't ruled out a return to the sport."
Another skeleton athlete, former World Cup bronze medallist Rose McGrandle, has also announced her retirement from the sport.