17 March 2013 Last updated at 11:58

Martial artists target GB Rio 2016 Olympic taekwondo places

GB Taekwondo won two medals at London 2012, with Jade Jones claiming an historic Olympic gold and Lutalo Muhammad an impressive -80kg bronze.

However, they are keen to find new recruits for the Rio 2016 Games and launched 'Fighting Chance: Battle for Brazil'  at the end of 2012.

It is one of several UK Sport backed initiatives, including Sporting Giants, Girls4Gold and Paralympic potential, which aim to identify and develop British athletic talent.

BBC Sport's Nick Hope was granted exclusive access to the first phase of testing as 238 athletes from sports like karate, kick-boxing and non-Olympic taekwondo were put through their paces.