Police are on the lookout for a man whose last known whereabouts are thought to be in Greenwich.
Officers want to trace 27-year-old James Sullivan, who went missing from his home in Sawbridgeworth, Hertfordshire.
James was last seen by a family member at his home in Riverfield Lane on Tuesday, July 28, at around 2.30pm.
He is believed to have left his home in his car, a silver Honda Jazz with registration NC09 EZV.
It was spotted and being driven through the Blackwall Tunnel at around 6pm on the day he went missing.
James is described as a white man of slim build. He is 5ft 10in tall.
He has short, dark brown hair and may currently be wearing black skinny jeans, a dark-coloured zip-up top and maroon or black Converse-style trainers.
Inspector Andy Palfreyman, who is leading the investigation to find him said: “James’ disappearance is unexplained and completely out of character.
“Understandably his family are very concerned about him and are desperate for news on his whereabouts.
“James if you see this appeal please contact your family, a friend or the police to let us know that you are OK.
“I would also appeal to anyone who has seen James or who knows of his whereabouts to please contact Herts Police.
“I am particularly keen to hear from anyone who may have seen James’ car, especially around the Blackwall Tunnel area.
“Officers are continually reviewing the situation and looking at all lines of inquiry to trace James however, members of public can prove vital in helping us find missing people so if you do see him or can help please let us know.”
Anyone who believes they have seen James or has information about his whereabouts is asked to contact Herts Police via the non-emergency number 101 as soon as possible.