Question: where was agatha christie's and then there were none filmed

title: And Then There Were None (miniseries)
text: Filming began in July 2015 . Cornwall was used for many of the harbour and beach scenes , including Holywell Bay , Kynance Cove , and Mullion Cove . Harefield House in Hillingdon , outside London , served as the location for the island mansion . Production designer Sophie Beccher decorated the house in the style of 1930s designers like Syrie Maugham and Elsie de Wolfe . The below stairs and kitchen scenes were shot at Wrotham Park in Hertfordshire . Railway scenes were filmed at the South Devon Railway between Totnes and Buckfastleigh . 

Answer: answer: Cornwall was used for many of the harbour and beach scenes, including Holywell Bay, Kynance Cove, and Mullion Cove.  Harefield House in Hillingdon, outside London, served as the location for the island mansion. The below stairs and kitchen scenes were shot at Wrotham Park in Hertfordshire and railway scenes were filmed at the South Devon Railway between Totnes and Buckfastleigh.
answer: And Then There Were None was filmed in Cornwall, Harefield House in Hillingdon , outside London, Wrotham Park in Hertfordshire and at the South Devon Railway between Totnes and Buckfastleigh.