Chief Superintendent Mary Doyle said: “I would ask anyone who knows where Jon is or if anyone has seen a man matching this description to contact officers on 101.”
Jon suffered memory loss in a recent car accident although this did not occur whilst on duty.
More top news
Police are appealing for the public’s help to trace a missing man amid fears he may have become injured whilst out walking his dogs.
How are things looking this week in the north west
Your funnel cloud photographs