1 March 2012 Last updated at 08:51

Olympic Thursday - Katy Sexton sets sights on London 2012 Games

Katy Sexton from Portsmouth became Britain's first ever female world champion when she took the 200 metres backstroke title in 2003, but after a number of injuries and personal problems, she was diagnosed with depression.

Now, Sexton is back and South Today caught up with her ahead of this weekend's Olympic trials at the British Swimming Championships.