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Apple TV's Emmy-winning spy drama Slow Horses has added five new actors to its Season 7 cast, which will adapt Mick Herron's novel 'Bad Actors' and follow Jackson Lamb's team hunting a mole at the heart of British government.

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**Apple TV's Slow Horses** added five actors — Varada Sethu, Ethan Moorhouse, Tuppence Middleton, Merab Ninidze, and BAFTA nominee Joshua McGuire — to its Season 7 cast alongside returning stars Gary Oldman and James Callis (as Claude Whelan).

What is a key fact in this story? (2)

**Season 7** is adapted from Mick Herron's 'Bad Actors' novel in the Slough House book series, with the plot centering on Oldman's Jackson Lamb and his team hunting to neutralize a mole at the heart of British Government before they can bring down the state.

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Slow Horses Season 7 Casts 5 New Actors on Apple TV — SkimNews

By Deadline · Summarized & edited by Kapil Samant · 2026-10-19

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Apple TV's Slow Horses added five actors — Varada Sethu, Ethan Moorhouse, Tuppence Middleton, Merab Ninidze, and BAFTA nominee Joshua McGuire — to its Season 7 cast alongside returning stars Gary Oldman and James Callis (as Claude Whelan).
Season 7 is adapted from Mick Herron's 'Bad Actors' novel in the Slough House book series, with the plot centering on Oldman's Jackson Lamb and his team hunting to neutralize a mole at the heart of British Government before they can bring down the state.
The returning ensemble includes Jack Lowden, Kristin Scott Thomas, Jonathan Pryce, Hugo Weaving, Saskia Reeves, Rosalind Eleazar, Christopher Chung, Aimee-Ffion Edwards, Joanna Scanlan, Tom Brooke, Lucian Msamati, and Olivia Cooke.
See-Saw Films produces the series, with Ben Vanstone adapting and executive producing, and Robert McKillop set to direct; the full executive producer lineup spans Jamie Laurenson, Hakan Kousetta, Iain Canning, Emile Sherman, Dan Hassid, Helen Gregory, Mick Herron, Gail Mutrux, Douglas Urbanski, and Oldman.

Why it matters: Slow Horses remains one of Apple TV+'s prestige spy dramas, and Season 7 continues the streamer bet on Mick Herron's Slough House novels by adapting 'Bad Actors' — a storyline built around a mole hunt inside British government. For Apple, retaining Gary Oldman and the ensemble through a seventh season signals sustained investment in original scripted content even as other streamers pull back.