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 sergeant who fronted anti-shoplifting campaign went on stealing spree in Asda before assaulting a security guard, a jury heard.
A bus driver from Crewe is celebrating today after scooping the £6.1m Lotto jackpot on The National Lottery draw on May 18.
A dad who has bought a house, got married, worked and even voted in the UK since moving here at six months old could face deportation.