Caledonian Petroleum Services (CPS) is an engineering service company specialising in on and offshore fabrication, manpower services, project management and the manufacture of wellservice and packaged equipment. The CPS ethos of quality, service, safety and reliability has promoted extensive company growth, diversification and enhanced industry recognition.

CPS joined the Sovereign Group in April 2005. Sovereign Oilfield Group is an engineering-focussed company formed in October 2003 with a mission to become a major supplier of engineering services and experienced engineering personnel to oil and gas companies and their contractors in the UK and internationally.