James, aged 37, was last seen in the area of Argyll Road in Boscombe around Wednesday April 1.
James is described as around six feet two inches tall, of muscular build and with short brown hair and blue/green eyes.
37-year-old James (Image: Dorset Police)
Officers are now appealing for help from the public as they search for James.
Detective constable Holly Sexton, of Dorset Police, said: “We are growing concerned for James’ welfare and are carrying out enquiries to try and locate him.
“I would ask anyone with information regarding his whereabouts to please make contact with us.
“I am also appealing directly to James, if you see this please make contact with us and let us know where you are as we just want to make sure you are OK.”
Anyone with information or knowledge as to James’ whereabouts is asked to contact Dorset Police online or by calling 999, quoting occurrence number 55260044290.