Brandon was last seen in the Wandsworth area.
There are growing concerns for his welfare.
He is described as being around 5ft 3ins tall, of medium build, with short brown hair and a beard.
He was last seen wearing a baseball cap, grey jogging bottoms, a navy t-shirt and a black jacket.
Anyone who sees Brandon or has information on his whereabouts is urged to call police on 101 or 999, quoting reference 7377/10MAY25.
