Theresa May and David Davis have agreed the wording of a proposed plan for trading with the EU after Brexit. Future key dates: 12 June - MPs to vote on the EU Withdrawal Bill: it suffered 15 defeats in the House of Lords, and must now be debated again in the House of Commons. 28 June - the EU summit may include discussion on the Northern Ireland border. 18 October - EU summit to agree an outline of future relations between the UK and EU. 31 October - negotiations must be complete by this date to give the 27 EU countries time to sign off the deal. MPs in the UK Parliament will also get to vote on the final deal. 13 December - the final EU summit of 2018, the fall-back option if nothing is agreed by 31 October.