凯莉·霍威

Keeley Hawes

饰：Self - Narrator,

Jack Copeland

饰：Himself - Author of `Colossus: The Secrets of Bletchley Park`s C

Paul Gannon

饰：Himself - Author of `Colossus: Bletchley Park`s Greatest Secret`

Richard Youlden

饰：Himself - Bill Tutte`s Great Nephew

Dan Younger

饰：Himself - Faculty of Mathematics, University of Waterloo

Michele Mosca

饰：Himself - Dep Director Institute for Quantum Computing

Keith Moore

饰：Himself - Head of Library and Archive, Royal Society

Kenneth Flowers

饰：Himself - Tommy Flowers` Son

凯莉·霍威

Keeley Hawes

饰：自己

Tony Sale

Tony Sale

饰：Self - Co-founder of 'The National Museum of Computing'