'Leavers' were out in force trying to denounce the Treasury's report on the costs of Brexit, arguing that if Osborne could not forecast the deficit accurately a few years ahead, why should anyone take seriously his forecast of the cost of leaving the EU 13 years ahead? Prime offenders were Tim Montgomerie, John Redwood, Iain Martin [from CapEx] and Dominic Cummings, from VoteLeave.