斯蒂文·麦金托什

Steven Mackintosh

饰：自己

布赖恩·迪肯

Brian Deacon

饰：Gordon Welchman,

Asa Briggs

Asa Briggs

饰：Self - Veteran, Hut 6

James Bamford

James Bamford

饰：Self - Author, 'The Puzzle Palace'

Jane Fawcett

饰：Self - Veteran, Hut 6

Rupert Allason

饰：Self - Security and Intelligence Historian,(as Nigel West)