The 1,000th edition of Flog It!, the popular BBC One antiques programme presented by Paul Martin, is set to be recorded at Bletchley Park on Wednesday (June 22).

Rather like a treasure hunt, members of the public are invited to visit the heritage attraction with up to three antiques or collectables they might be interested in selling.

If the item is chosen for inclusion in the show it is taken to auction a few weeks later – hopefully when the auctioneer’s hammer falls its owners make a tidy sum.

Everyone who goes along to the valuation day will receive a free appraisal of their items – even if their antiques are not chosen for filming or to go to auction.

Paul Tucker, executive producer of the show, says “The Flog It! team are delighted to be hosting our 1,000th show at Bletchley Park. It’s a privilege for us to be filming at a site of such historic significance. We look forward to revealing some of its fascinating history to our viewers.

“To help us tell the story we would be particularly pleased to meet people at the valuation day that worked or had relatives or friends working at Bletchley during the war years, or who have items related to the site during that period.

“We’ve got some exciting plans for the day to help us celebrate our 1,000th Flog It!”

Flog It! has made many significant finds during its 15 series including a rare Aboriginal Broad Shield that had been kept hidden away in a viewer’s wardrobe which was brought along to a valuation day in North Lincolnshire, and went on to sell at auction for £30,000. Flog It! also discovered an unusual Royal Doulton Spook figurine in Blackpool, which had been bought at a car boot sale for £2; it went on to sell at auction for £5,000.

Bletchley Park Trust, The Mansion, Bletchley Park, Milton Keynes, MK3 6EB, Wednesday, June 22, 9.30am to 4pm. Details: 01908 640404,