Catrin Stewart (born 29 January 1988) is a Welsh actress, known for playing Jenny Flint in the BBC science fiction series Doctor Who (2011โ2014), Emma Morris in the Sky One comedy drama Stella (2012โ2017) and PC Gina Jenkins in the S4C crime drama Bang (2017โ2020). She also portrayed Lily in Misfits (2010โ2011).