On July 13, 2023, the Court of Justice delivered its much anticipated judgment in Commission v. CK Telecoms,[1] setting aside the General Court’s landmark judgment that annulled the Commission’s 2016 prohibition of the proposed 4-to-3 merger between Telefónica Europe Plc (“O2”) and Hutchinson 3G UK Investments Limited (“Three”), the second and fourth largest mobile network operators in the UK, that would have created a new market leader with a combined share above 40%.[2]
