The UK left the EU on 31 January but remains under EU trading rules until the end of the year. The two sides have been holding talks since March in an attempt to secure a deal before this time, which is called the transition period, ends on 31 December. If a deal is not agreed by that point, tariffs – or taxes on goods – could come into force. But the same three sticking points have stopped negotiating teams coming to an agreement, and on Friday, talks came to an end with both sides saying “significant divergences” remained.