Detectives searching for Kevin John Palmer at a disused former pub in Fareham in Hampshire say he was last seen catching a taxi with two other men and they want to speak to the driver.
Detective Superintendent Paul Barton said: "The last known sighting of Mr Palmer was at the Abshot Country Club on the evening of 12th March 1999 when we believe he caught a taxi with two other men back to an address in Bishops Waltham."
He added: "En route it is suspected that Mr Palmer became involved in a fight with the other two passengers in Curbridge and was left there. I am really keen to trace the taxi driver from that night. Please contact detectives from the Operation Arkholme team at Southampton Central police station."
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Another cold and frosty night lies ahead, but the winter sunshine prevails for Friday.
Staying cold and frosty with plenty of winter sunshine.
Plenty of sunshine for some, but a little more cloud in the east and feeling cold