5 August 2012 Last updated at 15:35

Olympics sailing: Ben Ainslie wins fourth sailing gold

Great Britain's Ben Ainslie clinches his fourth straight gold medal to become the most decorated Olympic sailor in history.

Ainslie came ninth in a tense Finn medal race, but crucially finished ahead of Denmark's Jonas Hogh-Christensen, who takes silver.

Available to UK users only.

Watch a replay of the race on the BBC's Interactive Video Player.