Sian Reese-Williams (born 18 November 1981) is a Welsh theatre and television Actress and singer, best known for playing Genesis Walker in Emmerdale.
She was awarded the BBC London Theatre Award for outstanding performance in a musical in 2001 for her role in the National Youth Music Theatre's production of The Dreaming.
In 2008, Reese-Williams was cast to play the role of Genesis Walker in Emmerdale. The character was created by series Producer Kathleen Beedles, although by the time Reese-Williams's first episode aired on 1 April 2008, Anita Turner had taken over from Beedles. She was cast in the role and started filming in the week beginning 3 March 2008. It was announced that Reese-Williams was to leave the soap in 2013. Her character was killed off on 25 July 2013.
Following her stint in Emmerdale, Reese-Williams returned to theatre and in November 2013 played "Marta" in Children of Fate at the Bussey Building in Peckham.
In May/June 2014, she played 'Linda' in Alan Bennett's Enjoy at the West Yorkshire Playhouse.
She has worked extensively with new-writing theatre Paines Plough on their Roundabout Theatre season. She starred to wide critical acclaim as W in Duncan Macmillan's Lungs, which was awarded the 2016 Manchester Theatre Award for Best Studio Production.
In 2017 she starred in the BAFTA award-winning series 35 Diwrnod (Season 3) for S4C.
She is currently filming Craith/Hidden, a bliningual crime drama for BBC/S4C, playing the lead role of Detective Inspector Cadi John. Craith/Hidden will air on S4C in January 2018 and BBC Wales and BBC Four later in the year.
