A British intelligence officer Kate Henderson races against time to uncover a UK politician's potential ties with the Kremlin, risking her reputation and family, as a murder and election loom.

Secret Service (2026)

When the enemy is closer than you think, who do you trust?

★ 6.7/10 April 27, 2026 1 season

CrimeDramaWar & Politics

Creator: Tom Bradby

A British intelligence officer Kate Henderson races against time to uncover a UK politician's potential ties with the Kremlin, risking her reputation and family, as a murder and election loom.

Trailer

Creators

Tom Bradby

Cast

Gemma Arterton Kate Henderson Rafe Spall Stuart Henderson Alexander Terentyev Sergei Malinski Roger Allam Sir Alan Brabazon Avi Nash Ravindra Sangvhi Mark Stanley Ryan Walker Alex Kingston Rose Trewen Amaka Okafor Imogen Conrad Khalid Abdalla Zak Hussein Aoife Hinds Julie Price Rochenda Sandall Melissa Morris Lydia Leonard Amanda Walker