The future heir to the throne was at one of the supermarkets selling copies of The Big Issue yesterday morning.
He reunited with vendor Dave Martin after first meeting last summer.
The pair joined forces to raise awareness of The Big Issue and the complex issues surrounding homelessness and poverty in the UK.
They sold 32 copies the first time around.
“It was very nice to see Prince William again,” Dave said. “It was surreal but he was so friendly. He was concerned about me and about the homeless people.”