Episode 1: Episode 1
Release Date
Jul 21, 2026
Genre
Crime, Drama, Mystery, Thriller
Rating
TV-MA
Network
Peacock
Language
British English
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Cast & Crew
The Undeclared War S2E1:
Adrian Lester
Actor
Ed Stoppard
Actor
Alex Jennings
Actor
Simon Pegg
Actor
Tom McKay
Actor
Julie Barclay
Actor
Alana Maria
Actor
Hannah Khalique-Brown
Actor
David Bedella
Actor
Danny Sapani
Actor
Sian Brooke
Actor
Natali McCleary
Actor
Gavin Spokes
Actor
Billy Rilot
Actor
Chloe Pirrie
Actor
Scarlett Courtney
Actor
Joss Porter
Actor
Joshua Sher
Actor
German Segal
Actor
Will Godber
Actor
Sky Hui
Actor
Colin Teevan
Executive Producer
Caroline Levy
Producer
Paul McGuigan
Executive Producer
Colin Callender
Executive Producer
Peter Kosminsky
Executive Producer
Noëlette Buckley
Executive Producer
Daniel Gratton
Executive Producer