Lydia Hart is a fictional character from the British Channel 4 soap opera Hollyoaks, played by Lydia Kelly. Lydia was created by series producer Bryan Kirkwood as one of many characters introduced that year. She made her debut in the soap on 4 March 2009, and remained for ten months.

Sarah Barnes is a fictional character from the British Channel 4 soap opera Hollyoaks, played by Loui Batley. She debuted on-screen during the episode airing on 6 October 2005. Sarah was introduced by executive producer David Hanson as part of the Barnes family. In 2009, Batley quit the serial in order to pursue other projects. The character has been central to many key storylines, one of the earliest the high-profile gay storyline involving supercouple John Paul McQueen and Craig Dean.