Interiors for Aunt Elizabeth’s (Julie Christie’s) house may have been filmed here but this has not been verified and may well have been at Walsingham. The stables at this location were however used for the exterior scenes where Joseph stored his government property. In a later scene, having been asked by Alexander to relocate everything, Joseph stands in the courtyard and discovers that 2 of the records are missing. A number of the rooms in the Hall were likely to have been used for the London party scenes one of which has Anne and Lawrence making a plan to meet so she can give him the record.

Location listed on IMdB but filming at Melton Constable Hall was not confirmed by the production. However sequences may have been removed in the final cut.

Some of the following scenes may have filmed at a reserve under the care of the Norfolk Wildlife Trust. The 1st has the family embarking on a picnic on open grassland next to woodland. Everyone except Anne goes off to explore whilst she learns her lines. Falling asleep momentarily she discovers baby Oliver is missing. Frantic she runs into the woodland. She ultimately comes across young Walter (Sam Kubrick-Finney) looking at her in a dark almost sinister way. Anne is perturbed by his behaviour and sends him off to fetch the rest of the party to help search for Oliver. They return and the search continues. Oliver is ultimately found unharmed. In a later scene, Anne having failed to meet Lawrence leaves the vet without putting down either of the cats. There is a disturbing sequence when she runs into the woods, releases the animals and sees people burning the dead pets on open fires. Although she tries to hide, the family arrive and she is taken away but not before she has paid a young girl to post the record to Winston Churchill.

The exterior of St Nicolas Church with its magnificent backdrop of the North Sea was used for the scenes when Anne and Aunt Elizabeth approach the church. This was a tricky location to film as there were a number of modern day features that needed to be ‘removed’ during post production otherwise they would detract from the authenticity of the era. The interiors sequences when Anne and Aunt Elizabeth are listening to the Walter sing in the boys choir may also have been shot here. It is then that Anne notices a stranger sitting in a pew starring at her and becomes frightened. She makes an excuse to leave.

For about a month Poliakoff turned this wonderful Georgian house, complete with its own gothic ruins, into the Keyes family home. Initial scenes show Alexander and his family hosting an afternoon garden party for a select group of Alexander’s political colleagues in celebration of his birthday which ultimately becomes a dinner under the stars. During the dinner it is clear there is a romantic attachment between Anne and Lawrence (Charlie Cox), a young Foreign Office official who is also good friends with Anne’s brother, Ralph, a colleague. Hector (David Tennant), an MP and family friend, is very vocal in his support of Mr Churchill who is a rising political force in the Conservative Party. Others around the table are not so vocal particularly Joseph Balcombe (Jeremy Northam). Hector is also quick to condemn people involved in political life contemplating going on holiday at a time of imminent war with Nazi Germany! Due to the extreme cold during this part of the shoot the actors were sitting on hot water bottles surrounded by heaters blasting hot air over them! The distinctive remains of the medieval Gothic arch are clearly seen in these sequences. A number of pivotal interior scenes were also shot in the house given its authentic feel as it had not experienced much in the way of renovation since the 1920s. For example during the garden party scene, Anne, Ralph and Celia show their guests around the family home. Walsingham made it easy for the production team to turn back the clock as they hardly needed to do anything to dress the property, with the exception of introducing curtains, as the owners supplied all the props; they also used virtually every room during the shoot. In addition the outbuildings were used by the production team given the interiors which were deemed perfect for the scenes where Anne enters to rescue the missing family cat only to discover government files and documents, along with a record collection, stored on the shelves. Thinking the records contain music she removes a couple to play later which begins a catalogue of events that will change the course of her life and draw her into a dark, terrifying conspiracy. In a later scene the family walk down a village street to the church following the announcement of Hector’s death; this was filmed in Little Walsingham. Due to the presence of the Abbey ruins it is possible some of the scenes shot at Castle Acre were interchanged or used in sequence with the ruins at Walsingham to create the desired effect on screen; this has not been verified.