CCTV footage of Brian Smart has been released in a bid to find the 85-year-old who went missing from his home in Abbey Wood over three weeks ago.

The footage was taken at Bluewater Shopping Centre the day before he was reported missing on September 22 at around 7.30pm.

Police believe the coat featured in the footage released today is the same one he was wearing when he went missing.

His son Mark, 53, has urged anyone with information to contact the police as soon as possible.

He said: "We are missing him terribly and any information could prove invaluable.

"My dad is well known in the area and the whole family is desperate for him to come home safe."

News Shopper:

Have you seen Brian Smart? Call the police.

Mr Smart, who is generally fit and well for his age, is known to frequent Bexleyheath, Dartford and Bluewater.

He is described as white, 5ft 7ins, of medium build and he usually wears a dark waist length jacket, blue jeans and dark shoes.

He walks with a stick and has no money or Oyster Card.

Officers have been conducting extensive searches in the area and have conducted house to house enquiries.

Anyone with information is asked to call Greenwich Police on 07770-825-571 or the police non-emergency line 101.