For questions regarding Britain's exit from the European Union, popularly termed 'Brexit'. Use with the [united-kingdom] and [european-union] tags, depending on which parties your question refers to.
Brexit refers to the united-kingdom's withdrawal from the european-union. The Brexit process has been initiated after a referendum on the matter took place on the 23rd of June, 2016. The UK left the EU on 31st January 2020.
A full-text version of the trade agreement in principle between the EU and the UK may be found here.