Brexit expresses substantial changes and transformations of the British statehood and in the UK's relations with its partners in the EU and beyond. The British, who historically have been Eurosceptic, voted to leave the EU. By having done that, the authors asserts, they have started a disintegration process in their own state and in the EU. The aim of the article is to explore reasons, results and the prospects of Brexit. The authors analyze the European integration process's aspects, the European financial and migration crisis, opinions of the EU citizens, political and party debates on integration process in the UK, the British approach to referendums, and comparison of the two referendums on integration in the UK. The results of the referendum split in two the main British parties and the British society. The implications of Brexit are complex. There is an intrigue: how to keep the British participation in the Single Market and how to prevent disintegration of the state in the face of the Scottish National Party's demands. In the conclusion the authors underline British pragmatism and define the UK aspirations for Global Britain as a desire not to be confined to the European arena only.