One of the many perks of grace and favour pads is the additional chance to trough that they give those in high office through rental income. Despite being a record expense claimer in his days on the backbenches, John Bercow promised to clean up the system when he was appointed Speaker. Four years later Guido can reveal that he has cheekily rented out his London home, earning cash purely from the fact that the taxpayer houses him in Parliament. Is John all in it together?