Sioned lives in London, and is very recognisable in the world of comedy television in Britain. She was born in Carmarthen and brought up in Barry. Her novel Dal i Fynd has been picked up by television company Working Title. She produced a variety of comedic programmes for the main networks. Between 1999 and 2006 she was ITV’s Head of Network Comedy, and commissioned many films and series’ including Harry Hill’s Sketch Show and Cold Feet. She has numerous ongoing projects with Working Title and has been developing a series for Sky with the crew from Horrible Histories.