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Season 1 – Secret Service

Play trailer Poster for Season 1 – Secret Service Apr 2026 Drama Mystery & Thriller Play Trailer Watchlist
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50% Tomatometer 6 Reviews Popcornmeter Fewer than 50 Ratings
When MI6 agent Kate Henderson uncovers an audacious plot involving Russia and an asset in the UK Cabinet poised to become Prime Minister, she risks everything to hunt down a traitor.

Critics Reviews

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Carol Midgley The Times (UK) 3d
It is very polished, but not much “fun”. Gemma Arterton is a talented actress, but doesn’t feel convincing as Kate Henderso Go to Full Review Ben Dowell The Times (UK) 3d
3/5
Thankfully Arterton is an unshowy actress who delivers a solid, pleasantly unruffled performance. Go to Full Review Anita Singh Daily Telegraph (UK) 3d
3/5
...after a buzzy start, the series slows down, lumbering the cast with wooden dialogue...and too many annoying scenes where we have to strain to read text messages and text on computer screens. Go to Full Review Andrew Anthony Observer (UK) 2d
The whole cast wears pained expressions of irritation each time someone opens their mouth. It’s as if everyone is convinced that everyone else is an idiot. And perhaps they’re all right. Go to Full Review Charlotte Ivers Sunday Times (UK) 3d
This is an enjoyable bit of TV. The plot doesn’t go quite where you think it will, and the political angle is a nice means of getting something new out of a genre in which pretty much every idea has already been tried. Go to Full Review Christopher Stevens Daily Mail (UK) 3d
2/5
The pacing, the twists, the moments of tension and the juxtaposition of international crises with domestic squabbles all arrive at predictable places, as though the storyline has been constructed according to a template. Go to Full Review Read all reviews
Secret Service — Season 1

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Cast & Crew

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Gemma Arterton

Kate Henderson

Rafe Spall

Stuart Henderson

Khalid Abdalla

Zak Hussein

Alex Kingston

Rose Trewen

Roger Allam

Sir Alan Brabazon

Mark Stanley

Ryan Walker

Episodes

Episode 1 Aired Apr 27, 2026 MI6 agent Kate Henderson uncovers an audacious plot involving Russia and an asset in the UK Cabinet; Kate's hunt for the mole puts her agent's life at risk. Details Episode 2 Aired Apr 27, 2026 Kate suspects that her agent is in danger and, defying orders, prepares to rescue her; as the Prime Ministerial candidates start to campaign, Kate uncovers their murky Russian connections. Details Episode 3 Aired Apr 27, 2026 Kate's bold rescue mission in Malta backfires, and she draws flak from all sides; Kate is now on the hunt for a mole inside the government and within her own team at MI6. Details Episode 4 Aired Apr 27, 2026 The pressure mounts on Kate when the Russians brazenly target her family, and Rav follows the trail of Ryan Walker's murky finances to Geneva with drastic consequences. Details Episode 5 Aired Apr 27, 2026 Kate runs Cyclops in an audacious mission inside Moscow Secret Service HQ to finally trap the MI6 mole; as Kate reels from the fallout, a new Prime Minister enters Downing Street. Details
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Secret Service — Season 1

Secret Service View more photos

Season Info

Director
James Marsh, Farren Blackburn
Executive Producer
Gail Egan, Andrea Calderwood, Chloe Sizer, Tom Bradby
Screenwriter
Tom Bradby, Jemma Kenedy, Jemma Kennedy
Network
ITV
Genre
Drama, Mystery & Thriller
Original Language
British English
Release Date
Apr 27, 2026