Poppy Trowbridge on her work as a special adviser in Hammond’s Treasury as it tried to plan for Brexit and avoid crashing out with no deal. Plus, Carey Gillam on how the biotech company Monsanto tried to destroy her reputation

Parliament is gearing up for an autumn showdown over the possibility of a no-deal Brexit. Philip Hammond, until recently the chancellor of the exchequer, has accused Boris Johnson of shutting down any hope of securing an agreement. But the prime minister’s team continues to argue that Britain must leave the EU by 31 October.

It has been quite a journey for the Treasury: from accusations of “project fear” when it warned against any Brexit at all under George Osborne in 2016, to Hammond’s hopes of minimising the damage with an orderly withdrawal, and now, under Sajid Javid, preparing for the economic impact of no deal.