Danny Cohen, head of the BBC's television output, has promised viewers that the corporation will not make any more all-male comedy panel shows. Following recommendations made by the BBC Trust last year, Cohen has underlined his determination to see women appearing in the habitually macho environment of panel shows such as QI and Mock the Week. Talking to the Observer about his plans for better representing his audiences on screen, Cohen said: "We're not going to have any more panel shows with no women on them. It's not acceptable."