BRITISH sprinter Adam Gemili has announced his retirement from athletics.

The 32-year-old, a World Championships 4x100m relay gold medalist in London in 2017, has switched sports to work with Chelsea’s academy as a speed coach.

He wrote on Instagram: “After 14 unforgettable years, it’s time for me to hang up my spikes and step away from professional track and field, a sport that has shaped so much of my life.

“It’s hard to put into words what an incredible journey it’s been. I feel so lucky to have lived my dream for so long and truly humbled by every moment along the way.

“Time for a new chapter, but I’ll carry this one with me forever.”

Gemili was on the books at Chelsea as a youngster and went on to play for Dagenham & Redbridge before taking up athletics full-time.

The Kent-based racer competed at the London Olympics in 2012 and was European champion in the 200m in 2014.

He was also the first British man to break 10 seconds for the 100m and 20 seconds for the 200.