Katherine Sinead Kelly is an English actress and presenter, who made her TV debut in 2003, appearing on Last of the Summer Wine. Kelly rose to prominence after portraying Becky McDonald in the ITV soap opera Coronation Street between 2006 and 2012. For this role, Kelly won multiple awards including a National Television Award for "Best Serial Drama Performance" in 2012. Since leaving Coronation Street, she has played Lady Mae in the ITV drama series Mr Selfridge (2013–2014, 2016), Leah Dale in ITV drama Cheat (2019) and a lead role in the second series of Innocent as Sally Wright (2021). Kelly is also known for her roles in Happy Valley, Class, The Night Manager (2016), Criminal: UK (2019–present), and as DI Karen Renton in the second series of Liar (2020).