| Episode credited cast: |
 | Honor Blackman | - | Herself - Narrator (voice) |
| Rest of cast listed alphabetically: |
 | Sean Connery | - | James Bond (archive footage) |
 | Andrew Cook | - | Himself - Author of 'MI5's First Spymaster' (as Dr Andrew Cook) |
| Thomas Hennessy | - | Himself - Co-Author of 'Spooks: The Unofficial History of MI5' (as Dr. Thomas Hennessy) |
| Andrew Lycett | - | Himself - Ian Fleming's Biographer |
| Michael Smith | - | Himself - Author of 'The Spying Game' |
| Claire Thomas | - | Herself - Co-Author of 'Spooks: The Unofficial History of MI5' |
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