I will always believe DS Jones used extreme coercion with JM and threatened her with accessory to murder.
DS Jones was an officer of long experience with some 24 years of policing experience at the time of WHF. Most of his career was spent in a pre PACE environment where he pretty much had carte blanche to do as he pleased.
He served from 1961 to 1991 at South Ockendon, CID Grays, Tilbury, Brentwood, Scotland Yard, Maldon, Chelmsford & Witham.