Ian Colborne, 67, left his home in Station Road, Sholing, and was last seen around 1.30pm this afternoon under the train station bridge.
Police are extremely concerned for his welfare and officers are carrying out extensive enquiries to locate him.
Ian is described as being white, around 6ft 1ins tall and of slim buiild. He has collar length, unkempt grey hair and walks with a slight stoop to one side.
He was last seen wearing a brown barbour wax jacket, blue and white checked shirt, brown/beige jumper, jeans and brown slip on boots.
We believe he will still be in the Sholing area.
Anyone who has seen Ian or who has any information on his whereabouts should call 101, quoting reference 1108 of today’s date (May 27).