Priorities for commissioners are constantly changing, so how do you know what to pitch to them? In this specially recorded discussion from Fast Train Cardiff, Richard Sambrook, director of Cardiff School of Journalism, Media and Cultural Studies, talks to a number of commissioners about the shows that excite them and the pitching process. The panel includes Kerry McGeever, assistant editor for BBC Radio Wales, Llion Iwan, commissioner for factual programmes at S4C, Ellis Owen, head of commissioning at BBC Cymru and Gwawr Martha Lloyd, drama commissioner for S4C.