Exclusive: Analysis includes stark assessments of potential problems including panic-buying and civil disorder

The UK is currently less able to cope with a hard Brexit than it was in the spring, with the real risk of panic-buying in the run-up to Christmas and civil disorder if the country leaves the EU without a deal on 31 October, an official document reveals.

The prime minister, Boris Johnson, has made Michael Gove responsible for “turbo-charging” Brexit planning, and on Thursday the new chancellor, Sajid Javid, announced an extra £2.1bn of funding to prepare for a no-deal exit.