He has won gold medals in the Paralympic Games as well as the IPC world and European championships, breaking numerous records in the process.

He has won world championship titles in the freestyle, breaststroke, backstroke, and the individual medley as well as being part of the 2002 championship-winning 4x100 m relay team.

[1] He was also part of the victorious 4x100 m freestyle relay team alongside Jody Cundy, Giles Long, David Roberts, Matt Walker and Marc Woods.

[1][6] At the 2004 Games Crisp won four individual medals, including three silvers, with all four events being in different stroke styles.

[7] Crisp has achieved significant success in the IPC Swimming World Championships, winning sixteen medals.