Cycling: Olympic champion Hoy announces retirement

Olympic great Chris Hoy announced his retirement from cycling with immediate effect on Thursday.

The six-time Olympic champion, Britain's most successful Olympic competitor, bows out at the age of 37 after a career in which he became the most decorated cyclist in the history of the Games.

"I'm officially announcing my retirement from international cycling," he told a press conference in his native Edinburgh.

"It's a decision which I didn't take lightly. It's something I thought about hard with the help of my family and my coaches."