Atonement - The locations for filming the movie

Filmed on location in the U.K., the story of Atonement spans several decades. In 1935, 13-year-old fledgling writer Briony Tallis and her family live a life of wealth and privilege in their enormous mansion. On the warmest day of the year, the country estate takes on an unsettling hothouse atmosphere, stoking Briony's vivid imagination. Robbie Turner, the educated son of the family's housekeeper, carries a torch for Briony's headstrong older sister Cecilia. Cecilia, he hopes, has comparable feelings; all it will take is one spark for this relationship to combust. When it does, Briony - who has a crush on Robbie - is compelled to interfere, going so far as accusing Robbie of a crime he did not commit. Cecilia and Robbie declare their love for each other, but he is arrested - and with Briony bearing false witness, the course of three lives is changed forever.

As with Pride & Prejudice, Atonement was made by the filmmaking team on locations all over Britain. Some of the specific shooting sites were:

Stokesay Court, Shropshire
Stokesay Court is a Victorian house (built in 1889) which forms part of the privately owned Stokesay estate in the county of Shropshire. All the exteriors and interiors of the Tallis home and the Turner cottage were filmed at Stokesay.

London
London locations included Whitehall and Bethnal Green Town Hall. The latter was used for the scene where Cecilia and Robbie are reunited in 1939 at a tea house.
The underground Balham station scene set in 1940 was filmed at the closed tube (a.k.a. subway) station Aldwych.

A street in the Streatham neighborhood was dressed for the scene set in Balham when Briony, at age 18, is looking for where Cecilia is living.

The St. Thomas's hospital ward interior and corridors were built as a studio set at Shepperton Studios. However, the hospital's storeroom, day room, and nurses' dormitory scenes were filmed at Park Place, Henley Upon Thames; the exterior of the hospital was actually University College.

The wedding scene was filmed at St. John's Church, Smith Square.
The third portion of Atonement was filmed at the BBC Studios in Wood Lane.

Dunkirk and the French countryside
The scenes with Robbie and his fellow soldiers making their way through the French countryside en route to Dunkirk were filmed in Coates and Gedney Drove End, in Lincolnshire; in Walpole St. Andrew and Denver, in Norfolk; and in March and Pymore, in Cambridgeshire.

The poppy field scene was shot in Cheltenham, Gloucestershire.
The light industrial quarter scenes were filmed at the Grimsby fish docks; the heavy industrial quarter, as well as the marshland, scenes were filmed at Corus Steelworks, in Redcar. The latter's beach was the site of the Dunkirk beach sequence, and also stood in for the Bray dunes.

The French cinema at Dunkirk that Robbie drifts through was in fact Redcar's venerable Regent Cinema, which is located on the pier at the beach.