Sarah-Louise Platt (also Tilsley and Grimshaw) is a fictional character from the British soap opera Coronation Street. She was born on screen during the episode broadcast on 2 February 1987. She was played by Leah King in 1987 and by Lynsay King from 1987 until 8 October 1999 when King opted to leave to focus on her education. Tina O'Brien took over the role on 31 October 1999; she opted to leave in 2007 and made her final on-screen appearance on 30 December 2007. A number of false rumours about O'Brien returning to the role surfaced during her absence from the serial. In October 2014, it was announced that O'Brien had reprised the role, she returned to filming in February 2015 and returned on screen on 30 March 2015.