Character Name : Robert Watson Watt

Original Name : Eddie Izzard

Gender : Male

Character Name : Margaret Watson Watt

Original Name : Laura Fraser

Gender : Female

Character Name : Secretary Helen

Original Name : Lesley Harcourt

Gender : Female

Character Name : Henry Tizard

Original Name : Alex Jennings

Gender : Male

Character Name : Frederick Lindemann

Original Name : David Hayman

Gender : Male

Character Name : Albert Rowe

Original Name : Julian Rhind-Tutt

Gender : Male

Character Name : Arnold 'Skip' Wilkins

Original Name : Karl Davies

Gender : Male

Character Name : Edward 'Taffy' Bowen

Original Name : Celyn Jones

Gender : Male

Character Name : Higgy

Original Name : Iain McKee

Gender : Male

Character Name : Winston Churchill

Original Name : Tim McInnerny

Gender : Male