Collingstone House, located at 25 Savile Row in London, was used for the exterior shots of SIS Headquarters, the location of Burnside's office. Burnside lives in a flat in Frobisher House of Dolphin Square. Wellingham's office is located in the Foreign and Commonwealth Office on Whitehall. Many scenes take place outside Wellingham's office by the Robert Clive statue on King Charles Street. The 1960, Eero Saarinen-designed US Embassy at 24 Grosvenor Square was used for exterior shots of Jeff Ross's office.