In November 2009, Crichlow played the part of Alice Jackson in "Collision", an ITV1 drama which ran over five consecutive nights. From January to February 2010, Crichlow appeared as aspiring fashion designer Ali Redcliffe in the BBC One romantic comedy miniseries "Material Girl". In June 2010, she also played the role of Ashley in a BBC Three pilot, "Dappers". That same month, Crichlow presented "Nelson Mandela: One Incredible Life" on BBC Three. For the documentary, Crichlow travelled to South Africa to learn more about Nelson Mandela's story. In 2011, Crichlow played the character of Police Sergeant Lily Thomson in the BBC drama "Death in Paradise".