Slumped in an alleyway outside a bar: this was Sally Bercow in the early hours of Friday morning. The Speaker’s wife had spent a boozy evening with young male Tory researchers, kicking off at the Sports and Social in Parliament before heading to Players’, a regular piano dive for twenty-something staffers. Alastair Whitby, who works for a Conservative MP, tweeted: “Pleased to see @SallyBercow was out and on form last night at Players Bar”, while another Tory researcher told how he was “Yoloing [You only live once] on the dancefloor with Sally Bercow”. No doubt it went down well with John…