When I came to play back the recording of my recent interview with Bob Marshall-Andrews, the serially rebellious Labour MP for Medway, for a second or two my blood ran cold. As I remembered it, while I’d been drawing him we’d had a wide-ranging conversation about Blair, Brown, socialism, globalisation, MPs’ allowances, the constitution, the judiciary, the media and society at large. But instead of all that my tape started halfway through a long, rambling and very funny anecdote about a hotel where Marshall-Andrews had once stayed in Wales. My contributions, meanwhile, seemed to consist solely of monosyllabic grunts, occasional barks of laughter and increasingly frequent protestations that I must be getting home as I was feeling very ‘tired’.