William's debut feature film 'Gwen' premiered at the Toronto International Film Festival 2018. Listed on the Rotten Tomatoes Indie Fresh List upon its US theatrical release and selected by Mark Kermode as his film of the week upon its UK release. The film was also nominated for the Best British Film Award at the 2019 Edinburgh International Film Festival and has been nominated for two BAFTA Cymru Awards 2019. 

William has also directed Emmy and BAFTA award-winning TV Drama and Cannes Lion award-winning Commercials. His short film work includes 'Bovine' (Berlinale 2010) and 'Who's Afraid of the Water Sprite?' (Royal Television Society Award for Best Student Drama 2009).

(William McGregor, EIFF 2019)