There have been Brexit-related suggestions in some quarters that, because the UK is "leaving Europe", English contract law will be a less attractive option in international commerce as the chosen governing law of contracts. Actually, reason and experience indicates otherwise. English law has been the pre-eminent choice of governing law for international business contracts for decades, since long before the UK entered the EU.

9 March Draft Highlights, Draft Agreement on the withdrawal of the United Kingdom of Great Britain and Northern Ireland from the European Union and the European Atomic Energy Community, pp 130

PART SIX, INSTITUTIONAL AND FINAL PROVISIONS
TITLE I, CONSISTENT INTERPRETATION AND APPLICATION
[W] Art. 153, Jurisdiction of the Court of Justice of the European Union concerning Parts Three and certain provisions of Part Five
[W]TITLE III DISPUTE SETTLEMENT