 Morgan has said that her performance was so convincing that, by the end of production, crew members who had been accustomed to slouching or relaxing when they addressed her were standing straight up and respectfully folding their hands behind their backs.Mirren arranged to spend time off-camera with the supporting cast playing other members of the Royal Family, including James Cromwell, Alex Jennings and Sylvia Syms so they would be as comfortable with each other as a real family.To enhance the contrast of their different worlds, shots involving the Queen were taken in 35mm film and those of Tony Blair in 16mm film.