Christopher Adam Gregg is a former Detective Chief Superintendent and was head of West Yorkshire Police's Homicide and Major Enquiry Team (HMET). Gregg joined the force in 1974 and as a constable was put on front-line duties in the Yorkshire Ripper inquiry in the Helen Rytka murder incident room. He left the force in 2008 to take up a senior position as an adviser to a forensic service provider company, LGC Forensics. In 2010 Gregg, together with Lord Stevens and Angela Gallop, founded Axiom International Limited.