Detective Chief Inspector with the Avon and Somerset Constabulary. Upon promotion to DCI, Jones was posted to the constabulary's Major Crime Investigation Team taking the lead on all homicide cases within Avon and Somerset force area, which later spread to include Wiltshire. Jones was an investigating office in this constabulary at the time of the murder of Joanna Yeates in Clifton, Bristol. He told he Inquiry how the police operated with the press at this time and their alarm when the Daily Mail and Sun published information possibly harming the police investigation.