Gosford Park (2002)

Director: Robert Altman

Starring: Alan Bates, Maggie Smith, Emily Watson, Helen Mirren, Michael Gambon, Kristin Scott Thomas, Charles Dance, Geraldine Somerville, Derek Jacobi, Richard E. Grant, Jeremy Northam, Stephen Fry, Clive Owen, Kelly Macdonald

Locations

Hall Barn, Beaconsfield, Buckinghamshire
This was used for the external shots of Lady Trentham's house.

Syon House, Brentford, Middlesex
This was one of two stately homes used for the interiors, primarily the bedroom scenes.

Wrotham Park, Barnet, London
This was used for both exterior shots and some interiors including the staircase, dining room and drawing room.