Have you seen this man, who went missing on Friday?
Richard Fogel was last seen in Green Lane, Wolverton, at about 3pm on February 20.
Mr Fogel is aged 62, about 6ft, and has straight black hair.
He is believed to be wearing a black bomber-style jacket, black scarf, grey trousers and black and white trainers.
He is known to frequent Newport Pagnell, Bletchley and Stony Stratford.
Investigating officer Sgt Lee Brace said: “Richard, if you are reading this please make contact with police so we know that you are safe and well. You can visit a police station or call 101.
“If anyone has any information about Richard’s whereabouts, or recognise his description then please call police immediately on 101.
“If you don’t want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.org No personal details are taken, information is not traced or recorded and you will not go to court.
“Thames Valley Police is releasing an image of Richard in which he has a beard which he has since shaved off.”