The Undeclared War (TV) Cast
The cast of The Undeclared War. Updated on September 15, 2025.
75 actors
Hannah Khalique-Brown
as Saara Parvan (6 episodes)

Hannah Khalique-Brown plays Saara Parvin, a student on placement at GCHQ who gets involved in unraveling a cyber-attack.

Simon Pegg
as Danny Patrick (6 episodes)

Simon Pegg portrays Danny Patrick.

Maisie Richardson-Sellers
as Kathy Freeman (6 episodes)

Maisie Richardson-Sellers is Kathy Freeman, an employee from the NSA detailed to work at GCHQ.

Edward Holcroft
as James Cox (6 episodes)

Edward Holcroft plays James Cox.

Adrian Lester
as PM Andrew Makinde (6 episodes)

Adrian Lester takes on the role of Prime Minister Andrew Makinde.

Alex Jennings
as David Neal (6 episodes)

Alex Jennings appears as David Neal.

Hattie Morahan
as Elizabeth Kahn (6 episodes)
Ed Stoppard
as Richard Marston (6 episodes)
Julie Barclay
as Sally J (3 episodes)
Bharti Patel
as Yasmin Parvin (3 episodes)
Kirsty Hoiles
as Caroline Fitch (1 episode)
Nitin Ganatra
as Ahmed Parvin (2 episodes)
Gavi Singh Chera
as Sajid Parvin (4 episodes)
Robert Cavanah
as Campbell Scott (1 episode)
Alfie Friedman
as Gabriel Davies (3 episodes)
Melanie Gutteridge
as Chrissie (2 episodes)
Aysha Kala
as Amina Parvin (3 episodes)
Jamie Muscato
as Finn (4 episodes)
Andrew Rothney
as Rich T (4 episodes)
Nik Howden
as Adjudicator (1 episode)
Zaqi Ismail
as Zahir (2 episodes)
Tom McKay
as Max K (5 episodes)
Joss Porter
as Phil D (6 episodes)
Yasmin Wilde
as Bushra Yousafzai (4 episodes)
Julian Harries
as National Security Advisor (4 episodes)
Sean La-Tunje
as Temi (3 episodes)
Chike Chan
as Chen (2 episodes)
Isla Hannigan
as Millie (2 episodes)
German Segal
as Vadim Trusov (5 episodes)
Daf Thomas
as Young Male Canvaser (1 episode)
Tinatin Dalakishvili
as Marina Veselova (4 episodes)
Eduard Flerov
as Felix Trusov (1 episode)
Janina Elkin
as Ludmilla Trusov (1 episode)
Nikolay Serdtsev
as Boris Leonov (1 episode)
Alex Romashov
as Pyotr (1 episode)
Daniel O'Meara
as Newscaster (3 episodes)
Andrew Byron
as Glavset Supervisor (1 episode)
Tamara Kumar
as Mina Veselova (1 episode)
Nikita Zabolotny
as Misha (3 episodes)
Elee Nova
as Varvara (2 episodes)
Ernest Gromov
as Yevgeny (2 episodes)
Yanina Hope
as FSB Lecturer (2 episodes)
Sophia Carlo
as Zasha (1 episode)
Kerry Godliman
as Angie McMurray (3 episodes)
Rick Bithell
as Reporter (1 episode)
David Prosho
as Steve Cleary (2 episodes)
Oliver Powell
as Daz Wiskowski (1 episode)
Lloyd James
as Uniformed Sergeant (1 episode)
Sacha Plaige
as Camerawoman (1 episode)
Gediminas Adomaitis
as Vasily (1 episode)
Sukh Ojla
as Polling Clerk (1 episode)
Rekha John-Cheriyan
as Farzhana Shah (1 episode)
Ashley Zhangazha
as Robert Adebayo (1 episode)
Victoria Broom
as Alex (1 episode)
Steph Parry
as Director (1 episode)
Alpha Kargbo
as Male Relative (1 episode)
Florence Bell
as Millie W (1 episode)
Isaura Barbé-Brown
as Annie (1 episode)
Bhawna Bhawshar
as Nazia (1 episode)
Dan Ball
as Mark Milsome (1 episode)
Belle Kumble-Rose
as Student (1 episode)
Paula Kaye
as Adede (1 episode)
Lucas Hare
as Jack Barker (1 episode)
Keiron Self
as Lt. Colonel Andy Marsh (1 episode)
John Schwab
as Matthew Mitchie (2 episodes)
Iain McKee
as Peter Walker (1 episode)
Irena Tyshyna
as Russian Interviewer (3 episodes)
Charles Abomeli
as General Landsman (1 episode)
Tom Mumford
as Police Sergeant (1 episode)
Jessica Layde
as PC Sandy Bishop (1 episode)
Anna Cannings
as Mary Davies (1 episode)
Martin Trenaman
as Harry Davies (1 episode)
Alex Reid
as Colonel Pauline Keele (1 episode)
Yuri Klimov
as Russian General (1 episode)
Brendan Purcell
as GCHQ Security Officer (1 episode)
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