Ray Riddoch has been named co-chairman of the board of directors of Oil & Gas UK. Riddoch currently serves as UK managing director and senior vice president for Nexen's European operations. Riddoch has more than 30 years of upstream experience in the UK, Europe, and Africa. He was appointed managing director at Nexen in July 2015 after joining the company in 2011. Prior to this, he served in several leadership positions in operations; projects; human resources; and health, safety, and environment at Elf and Total.