It is a mystery why Alexander Armstrong has not been hired as permanent chair of the spontaneous satirical news quiz - it feels made for his wry timing. In the first of a new run, the comedian, gameshow host and would-be opera singer resumes the role of guest referee, attempting to control captains Ian Hislop and Paul Merton, plus BBC Breakfast presenter Naga Munchetty and comedian-actor Josh Widdicombe. Hislop is already licking his chops at the prospect of lampooning a shambolic few weeks in British politics.