UK prime minister Boris Johnson has ordered ministers and officials in his new government to "turbo-charge" preparations for a no-deal Brexit, unnerving currency markets and businesses — and leaving EU leaders wondering if he's bluffing.

The new prime minister's pledge to leave the EU with or without a deal on October 31 means both sides stand perilously close to a cliff-edge, peering down at the prospect of medicine shortages, flight disruptions and endless border queues.

To underline the UK's shift in tone, chancellor Sajid Javid will this week announce a further £1 billion ($1.8b) for no-deal planning — on top


Data flows


Financial services