Cain began her acting career in 2005, appearing in an episode of
Doctors as Louisa Stevens. She then went on to play the recurring role of Katie Rex in
The Inbetweeners between 2008 and 2009. In 2012, she was cast as Charlie in the
BBC Three series
Some Girls, the leader of the "Pretties" clique. In 2014, she starred as Carly in the
ITV comedy
Edge of Heaven. Cain has gone on to appear in further episodes of
Doctors in 2015 and 2018 respectively. In 2023, she played Hilary in the ITV series
Three Little Birds. In 2025, she appeared in
Murder Before Evensong as Tanya the Travel Agent. ==Filmography==