Simon Chorley Art & Antiques is an art auctioneer and art valuation company, based in Gloucester, England. The company was founded in 1862, and conducts auction sales and carries out valuation services for private clients for insurance purposes, probate, family division and sale.The firm provides expert witnesses to police investigations and to the Crown Prosecution Service, as well as valuation work for identifying and quantifying fine art and antiques seized under the Proceeds of Crime Act.