He moved to Australia when he was 10 years of age, and attended the Western Australian Academy of Performing Arts, in Perth.
Other notable graduates of WAAPA include Hugh Jackman, Lisa McCune and Frances O"Connor. Since graduating, Crewes has taken part in many stage plays and musical productions, both in Australia and internationally, and has also appeared in various television and movie productions. Crewes" stage musical theatre roles include "Lieutenant
Joe Cable" in South Pacific, "Marius" in Les Misérables, "Claud" in Hair and "Chino" in West Side Story.
Other stage musicals include Joseph and the Amazing Technicolor Dreamcoat, The Wizard of Oz and Aspects of Love. Crewes originated the leading role of "Walter Hartright" in the West End production of The Woman in White (in which he starred from September 2004 to July 2005).
Jefferys also taught Crewes the difficult art of being a horse whisperer. Horse whispering usually takes years to learn, but Crewes was able to master this difficult skill in only two weeks.
From 2011, he originated the role of Pasha/Strelnikov in the Australian premiere of Doctor Zhivago.
Following this in 2012, he performed in The Production Company"s season of Chess as Frederick "Freddie" Trumper. Directed by Gale Edwards, Chess featured Alinta Chidzey, Bert Louisiana Bonte, Mark Dickinson, Michael Falzon, Silvie Paladino and Simon Gleeson. and ran for 10 performances (as standard for The Production Company). Crewes" television and movie roles include "Luis Amor Rodriguez" in Dream Team, DOA: Dead or Alive as Guy on Boat, and a major role as "Chad Kaplan" in the 2002 film Resident Evil.
Green Room Nominee (2012) Martin Crewes for Male Artist in a Leading Role ("Freddy" in Chess) Winner (2002): Martin Crewes for Male Artist in a Leading Role ("Claud" in Hair) Nominee: Martin Crewes for Male Artist in a Leading Role ("Jim Ryan" in The Manitoba from Snowy River: Arena Spectacular) Helpmann Nominee (2011): Martin Crewes for Best Male Actor in a Supporting Role in a Musical ("Pasha/Strelnikov" in Doctor Zhivago) Nominee (2002): Martin Crewes for Best Male Actor in a Musical ("Rik" in Oh! what a night).