The real No. 10 Downing Street was decorated by Steve Hunt, his first job after leaving school. The entrance hall behind the famous No. 10 front door is blue in the film, but was really painted red, which Margaret Thatcher did not like, since it is the traditional colour for the opposition Labour Party. The main staircase was painted in a stippled yellow glaze, not beige-pink like in the film.
Philip Jackson (Bernard Ingram) and Michael Cochrane (Alan Clark) both appeared in an earlier BBC political drama entitled Margaret Thatcher: The Long Walk to Finchley, to which this production is an indirect sequel. They played Alf Roberts, the father of the title character, and Sir Waldron Smithers respectively.