Footage of a missing pensioner leaving a Kent shopping centre has been released by police. It comes as officers continue to search for Anthony Brown, 82, nearly two weeks after he was last seen on a train in the county. Newly released footage shows Mr Brown leaving Bluewater in Greenhithe with a person by his side. Mr Brown, who also goes by the name Tony, was last seen onboard a train which left Higham railway station at 4.50pm on Thursday, January 18. It arrived at Northfleet at around 5.02pm and officers believe the elderly man, who is from Reading, could still be in the area. He was report…