Slaughter and May, Bredin Prat and Freshfields Bruckhaus Deringer have taken lead advisory roles on proposed new joint venture agreements between PetroChina and chemicals producer Ineos.

Ineos instructed a team of lawyers from Slaughters and its French best friend firm Bredin Prat to advise on the venture that will see the Chinese energy giant partner with Ineos to trade and refine oil at refineries in Scotland and France.