Alex Jones is joined by guest co-host Dan Walker. Martin Clunes talks about the new series of Doc Martin, and how he managed to attract a Hollywood A-lister to appear in the show. Panorama's John Sweeney investigates the ongoing story of the sub-postmasters who were accused of theft and false accounting at their Post Office branches. Plus there is a lawnmower race, with the winner gaining automatic entry into the world championships. Show less