Mark Rylance : The Undeclared War / NBC Universal - Peacock

The Undeclared War takes place in the post-pandemic world of 2024 against the backdrop of an upcoming British general election involving the UK’s first Black Conservative prime minister (Lester). It tracks a leading team of analysts at the heart of the UK’s NSA-style spy agency GCHQ as they attempt to ward off a cyber-attack on the country’s electoral system.

Pegg features as Danny Patrick, GCHQ’s head of operations, while Rylance plays John Yeabsley, a GCHQ old hand, who is brought back into the fold to support former colleagues in combatting the heightened threat level. Khalique-Brown is Saara Parvan, a young student doing work experience in the GCHQ Malware Department, while other characters include Kathy Freeman (Richardson-Sellers), an American cyber-analyst on attachment at GCHQ from the NSA, and GCHQ head David Neal (Jennings).

Kosminsky has been researching the series for three years, gaining access to intelligence experts in both the UK and U.S.