|Born||18 November 1981|
35 Diwrnod (2017)
Requiem (2018)Craith/Hidden (2018)
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 Gennie 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.
In 2016, she featured in series 3 of the critically acclaimed Welsh crime drama Hinterland / Y Gwyll, playing DI Tom Matthias's love interest, Manon.
She played the role of Trudy in the BBC One/Netflix drama Requiem, which aired in early 2018, followed by the lead role of Detective Inspector Cadi John, in a bilingual crime drama that was shown on S4C in January 2018 as Craith, with English dialogue dubbed into Welsh, before being broadcast with bilingual dialogue on BBC Wales and BBC Four as Hidden in June 2018.
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.
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.
She now lives in South London.
|2017||Craith||TV||D.I. Cadi John||Season 1 regular (lead), 8 episodes|
|2017||Requiem||TV||Trudy||Season 1 regular, 6 episodes|
|2017||35 Diwrnod||TV||Sara||Season 3 regular, 8 episodes|
|2016||Hinterland||TV||Manon||Season 3 regular, 4 episodes|
|2008–13||Emmerdale||TV||Genesis Walker||Series Regular, 597 episodes|
|2009||Loose Women||TV||Herself||Guest, 1 episode|
- "BBC Mid Wales Showbiz". Archived from the original on 20 July 2012. Retrieved 31 January 2009.
- BBC Wales Hall of Fame Sian Reese-Davies Archived 20 July 2012 at Archive.is
- Green, Kris (27 May 2008). "Bonus Scoop: Emmerdale series producer Anita Turner". Digital Spy.
- "Interview with Sian Reese-Williams (DI Cadi John)". BBC Media Centre. 23 May 2018. Retrieved 23 June 2018.