It started like a bit of good old political knockabout. PMQs opened with a planted question from Mark Menzies (Con, Fylde) asking the PM about Britain’s sick-note culture. Cameron, looking suitably grave, declared that the fake-sniffle problem afflicts even senior management. Ed Miliband, he told us, had recently claimed he was too ill to attend a rally called by health workers. Three hours later he was seen heartily cheering at a football match having been driven to the ground in a Rolls Royce. ‘What was it,’ asked Cameron, ‘that first attracted the Labour leader to the multimillionaire owner of Hull football club?’ This prompted howls and jeers from every part