17 July 2012 Last updated at 16:27

London 2012: Adam Gemili hopes rivals spur him to personal best

British athlete Adam Gemili hopes competing against some of the world's top 100m sprinters will push him to run under 10 seconds at London 2012.

The 18-year-old won 100m gold at the World Junior Championships earlier this month with a time of 10.05 seconds.

The former lower-league footballer finished second behind British champion Dwain Chambers in the British Olympic trials to claim his place in Team GB.