4 August 2012 Last updated at 14:02

Olympics rowing: Purchase & Hunter final restarted

Drama unfolds at the start of the men's lightweight double sculls final.

Zac Purchase's seat breaks underneath him and the British boat comes to a complete stop, before race is restarted and the British duo are pipped at the line by Denmark's Rasmus Quist and Mads Rasmussen.

Watch the rowing session here.

Available to UK users only.