Mr Henry’s family has been informed of the change in the nature of the investigation and they are being supported by specialist officers.
Detective Chief Inspector Matt Wood, of the Met’s Specialist Crime Command, said: “Sadly, yesterday we had to inform Mr Henry’s family that we are treating his disappearance as a murder investigation. You can only imagine how devastating this will be for all those who love and care for him. I know his loved ones will still be hoping and praying that Justin will still be found safe and well. However, the absence of any proof that Justin is alive, the circumstances around his disappearance, which his family say is totally out of character, and forensic evidence we have gathered, all suggest that he has come to serious harm and may have been murdered.
“Along with his family, we sincerely hope this is not the case, and that is why we are reaching out to the public to help us find out what has happened to him. Please think about the anguish of Justin’s family and if you have any information that could assist, contact us.
