Clifford Chance (CC) and Cleary Gottlieb Steen & Hamilton have closed the landmark £830m merger between the Paris and London clearing houses which will dramatically cut the cost of cross-border trading around Europe.

CC advised London Clearing House (LCH) and Cleary Gottlieb advised Clearnet – which is 80% owned by Euronext and 20% owned by Euroclear – on the deal that valued each of the parties at £415m.