So far, there seem to be three theories about what drove so many people to vote for Brexit: this article is kind and very informative. But please let me know about G20 investors and foreign direct investment The UK ceased to be a member of the European Union (EU) on 31 January 2020 after 23:00 GMT. This was a long-awaited historic milestone that will bring about a significant change in the politics and policies of the remaining 27 Member States of the European Union, and in particular the United Kingdom. It becomes important to see how this will change the political decision-making process and how nations will go about it. Your email address will not be published. .