The Vickers Viscount 701 airliner (G-ALWF) used in this episode is on display at the Imperial War Museum at Duxford.
The belly dancer in a photo shown to Prince Philip is Egyptian belly dancer Samia Gamal.
Claire Foy (Queen Elizabeth II) and Ed Stoppard (Tony Longdon) also worked together on Upstairs Downstairs (2010) as Lady Persephone Towyn and Sir Hallam Holland respectively.