Friend gone missing, last known to be in London. Mental health vulnerable, any help appreciated

Hello,

One of my friends is missing and the last known location is believed to be London. We’re not from London and don’t have anyone there so that makes matters even harder in regards to locating him.

Police have been contacted and doing what they can but if anyone happens to see him or anything, it’d be a massive help if you could provide us with any information on his location.

As stated in the image, he’s mental health vulnerable so we’re very worried about him.

Thank you everyone

by RedditGuy0001