The 54-year-old was last seen at Basingstoke train station shortly before 6pm on Thursday 31 May.
We are concerned for his welfare and are asking members of the public to call us if they see him.
Peter is described as:
Tattoos on his fingers and on both arms, including a bird tattoo on one arm
He was last seen wearing a dark jacket and trousers, a mustard coloured T-shirt, a black baseball cap and black framed glasses.
If you see him, or have any information regarding his whereabouts, please call police immediately on 101, quoting 44180202527.