In November 2008, the BBC announced Crichlow had been cast as Annie Sawyer, a ghost in a flat shared with a vampire and a werewolf, in the BBC Three series "Being Human", replacing Andrea Riseborough who had played the character in the pilot. In 2011, Crichlow won the TV Actress of the Year Award at the annual Glamour Awards for her work on the show. She continued to play the role of Annie in the programme until deciding to depart following the last episode of the fourth series, which aired in March 2012. Crichlow later narrated the audiobook of Simon Guerrier's tie-in novel "The Road".