London | If Labour were a house, would it be hipster student digs, with dodgy foundations? If Boris Johnson were in a film would he be played by Carpool Karaoke's James Corden or Little Britain's Matt Lucas? What would Nigel Farage do on a big Friday night out? If Jeremy Corbyn were a biscuit, which kind would he be?

Opinion polling is a serious business - or so we've always thought. But beyond the headline movements, one of the highlights of the British election has been the focus groups run by British billionaire Michael Ashcroft, whose quirky questions showcase the best of British humour.