Having finished 25th at both the 2005 and 2007 World Championships, Tonia Couch broke through as an international contender on her Olympic debut in 2008, finishing eighth in the 10m Platform in Beijing.
She repeated the feat the following season at the 2009 World Championships in Rome and then again at her second Commonwealth Games in 2010 in Delhi.
The 2010 Commonwealths also saw the international formation of her fruitful 10m Synchro partnership with Sarah Barrow as the pair finished fourth.
Couch reached the World final again in 2011, finishing ninth in the 10m Platform, while she and Barrow were agonisingly shy of the podium as the finished fourth.
The duo shone in 2012, winning European gold at World Cup bronze before a fifth-place finish in front of a home crowd at the London 2012 Olympics.
Having reclaimed the British 10m Platform title at the beginning of 2013, Couch competed at her fifth consecutive World Championships in the summer, finishing ninth in the 10m Platform and fifth with Barrow in the 10m Synchro.