William McGroaty, who likes to be called Liam, was last seen in the Chorley area at 12.15am on Saturday, July 10. He is described as 6ft tall with a Scottish accent. He was last seen wearing a black jacket, grey hoody, blue jeans and grey trainers. Police say he has links to the Chorley, Preston and Blackpool areas. A police spokesman said: "We are concerned for the welfare of 54-year-old William McGroaty. If you have seen William, or have any information about his whereabouts, please call 101 quoting investigation reference 04/113871/21."