British independent watchmaker Peter Speake-Marin was asked to be a consultant for the scenes where Pierce Brosnan is at a workbench. Upon meeting, Brosnan was so impressed by Speake-Marin that he purchased one of his watches; subsequently, Speake-Marin asked Brosnan to become a brand ambassador, to which he agreed. Brosnan is possibly the most high-profile celebrity to become an ambassador for any independent watchmaker. Prior to his official role as ambassador, Brosnan can be seen wearing a Speake-Marin "Piccadilly" wristwatch during filming, in candid photographs, post-production, and a pink gold model during his Super Bowl XLIX (2015) commercial for Kia. In the movie, the store, located at 29 Bruton Street, is named "PSM Bespoke Watchmakers"; "PSM" is an abbreviation commonly used by Peter Speake-Marin. In 2017, he left the company to focus on an educational enterprise.
The City of Westminister College was the location used for several of the Embassy rooms and offices.
The view through the magnifying lens in the Watchmaker's secret lab, shows the Watchmaker simply adding a blob of solder to a standard micro SIM card.
Overlooking Tower Bridge and the River Thames, Sugar Quay, London was the shooting location of Sam Parker's (Dylan McDermott's) office, where Kate (Milla Jovovich) is reprimanded for blocking Dr. Emil Balan's (Roger Rees's) passport request. The place was also the location of the Embassy Bubble, where Sally (Frances de la Tour) tracks Kate's progress when she goes on the run.