World Athletics 2011: Dai Greene hopes to match gold at London 2012

Dai Greene says he "can't settle for anything less" at the London Olympics, after winning Britain's first gold medal of the World Athletics Championships.

The Welshman stormed to 400m hurdles victory with a brilliant sprint finish in Daegu, South Korea.

Greene says he thought he had set up the race "quite poorly" but "dug deep" to snatch gold.