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Season 1 – Secret Service

Play trailer Poster for Season 1 – Secret Service Apr 2026 Drama Mystery & Thriller Play Trailer Watchlist
Watchlist Tomatometer Popcornmeter
56% Tomatometer 9 Reviews 65% 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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Jared Richards The Age (Australia) Jun 29, 2026
2/5
...Secret Service could be perfectly watchable, with plenty of intrigue and surprises in its five episodes. But it’s criminally dour, completely forgetting that thrillers need wit to work. Go to Full Review Sarah Dempster Guardian May 14, 2026
3/5
Secret Service doesn’t offer anything new. But it’s confidently paced and slickly directed (by the Oscar-winner James Marsh) and there are enough big things happening at regular intervals (murder, guns etc) to keep it all ticking over. Go to Full Review Carol Midgley The Times (UK) May 5, 2026
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 James Croot The Post NZ Jun 10, 2026
Secret Service might be a little more old-school Le Carré than the cutting edge of The Capture, but that doesn’t mean it’s not chokka with fully committed characters and compelling twists that make for compulsive viewing. Go to Full Review Andrew Anthony Observer (UK) May 6, 2026
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) May 5, 2026
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 Read all reviews

Audience Reviews

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Latisha G @amethys Sep 22, 2026 It was...fine? I never tried to predict a shows plot but for some reason this time guessed who it was in the first episode. Maybe it was just too obvious? Nice to see some more grounded queer representation. See more Andrei D @RT74856639 Aug 16, 2026 The plot is a little warmed over but Arterton makes it interesting, the Britishness mostly works See more Delia D @camila1691 Aug 3, 2026 Spy drama Secret Service was formulaic but Roger Allam and Ralph Spall improved it and I thought the surprise ending worked well. See more Georgina B @RT32659438 Jul 17, 2026 Excellent series looking forward to next series.one of the best i have watched.Keeps you wanting to know whats next. British make the best Spy shows See more Edward L @Glyndower May 25, 2026 Bog standard espionage series with little originality and the obligatory unpleasant teenage children of the main character. A waste of some good British actors. See more Per S @RT83737705 May 21, 2026 Mediocre standard spy series with wrong main character. See more Read all reviews
Secret Service — Season 1

My Rating

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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
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