direct to your inboxFour years after the Brexit referendum took place, it might be easy to have forgotten that the most significant consequence of the vote Leave victory is yet to come.In less than three weeks, Britain will leave the EU single market and customs union, and at the time of writing, no future trade deal has been agreed.The Prime Minister Boris Johnson has reportedly set a new deadline of Sunday, 13 December, to reach an agreement.If that doesn't happen, it means that, come 1