In this article, the Brexit impact on the UK economy, namely the business, is considered. The most characteristic aspects of the state economy certain indicators decline are considered, and their alleged dependence on Brexit is revealed and argued. A detailed analysis of foreign and domestic corporations share, their regional affiliation within the territory of Great Britain has been carried out. The dynamics of their number during the period of the main events related to Brexit, as well as the share of their contribution to the United Kingdom economy for the specified period is revealed. The main prerequisites and possible ways of leaving a foreign business from the UK in the current circumstances are investigated.