Police are urging residents and shoppers in Kingston to be on the lookout for a 92-year-old man missing from Kingston Hospital.

William Knight suffers from Alzheimer's disease and was seeking medical attention at the hospital for a knock to the head.

He was last seen in the reception of the hospital at 10.10am today, Saturday, December 17, and has not been seen since.

He was last seen wearing a green or grey Barbour-style wax jacket with black trousers, black jumper and brown/black shoes.

He is a bold white man with glasses who stands at 5ft 2in (1.57m) tall.

Anyone with information is asked to call officers on 101.