She decided to switch to competing in paratriathlon after winning gold and silver at the Paralympic Games in 2016, and became ITU World Champion in the PTS5 classification in 2019.

[3] During the 2009 season, Cashmore broke the European 200m IM record and represented GB at the World Short-Course Championships in Rio.

[3] At the Paralympic Games in Rio de Janeiro in 2016 Claire took silver in the 100m breaststroke SB8 and also claimed a gold medal in the 4 × 100 m medley relay.

She was given a place on the UK Sport talent transfer programme and made her major international debut at the 2017 ITU World Triathlon Grand Final Rotterdam.

[3] Cashmore was appointed Member of the Order of the British Empire (MBE) in the 2017 New Year Honours for services to swimming.