Sophie Colquhoun is a British actress from Liverpool, England. She appeared in the role of Cynthia in the first two series of the ITV2 comedy series Plebs.
In 2005, Colquhoun studied at Central St. Martins of the University of the Arts London. At the Royal Academy of Dramatic Arts, she studied with The Bill director, Peter Cregeen, and attended the site-specific workshop at , along with Charlotte Munksø in Italy.
Colquhoun's film credits include ', Anti-Social, The Inbetweeners Movie and Freaks of Nature.
From 2013 to 2014, she played Cynthia in the television programme Plebs.
Her television credits include ', Holby City, ', Death in Paradise, Crackanory, The Royals and Cuckoo.
In 2017, she joined the voice cast of Thomas & Friends as the voice of Frankie, in '.