The 34-year-old was last seen at around 6pm today, 4 August, on Brintons Terrace in Southampton.
He is believed to still be in the Southampton area.
Benjamin is described as being white, around 6ft tall, with a medium to heavy build, he has a large black beard and dark brown hair.
He was last seen wearing a white Adidas t-shirt and black tracksuit bottoms with stripes on them, as in the picture.
Police appreciate the image isn’t very clear, but are hoping someone might still recognise him if they see him.
If you see Benjamin, or think you may have seen him in the past couple of hours, please phone 101 with reference 44210309978.