Jack Thorne is the acclaimed screenwriter behind episodes of His Dark Materials, Shameless and Skins. In this year's MacTaggart Lecture at the Edinburgh TV Festival he set out why he believes the industry has failed disabled people "utterly and totally". Ros Atkins and guests discuss. Also in the programme, David Elstein, former Channel 5 CEO, sets out his case for the privatisation of Channel 4.Guests: Jack Thorne, screenwriter, Bryony Arnold, Co-Director of Deaf & Disabled People in TV, Cherylee Houston, actor and founder of the Disabled Artists Networking Community, Deborah Williams, executive director of the Creative Diversity Network, and David Elstein, former Channel 5 CEO.Producer: Emma WallacePresenter: Ros Atkins