The Shadow Brexit Secretary, Keir Starmer, was one of the many star guests at the recent Kings Place Politics Festival. Speaking to me as around 100 000 people were marching in London calling for a 'people's referendum' on Brexit Keir Starmer explains how and why the Labour leadership takes a different position. He also talks about the big leap from being the Director of Public Prosecutions to a Labour politician in a pivotal post...and how he occasionally tries to take his mind off the epic Brexit permutations.