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MI5’s finest – well, -ish – are back.
An Apple TV+ show that only gets better and better, Slow Horses is returning for a fifth run this autumn. September 24 is the date to earmark for the return of Gary Oldman’s schlebby spymaster Jackson Lamb and his band of misfit heroes at Slough House.
The first two episodes will launch on that day, with the final four to follow once a week every Wednesday until October 22.
Season five is adapted from Mick Herron’s 2018 Slough House novel London Rules and sees Ted Lasso star Nick Mohammed join the ensemble as an ambitious mayoral candidate.

‘In season five, everyone is suspicious when resident tech nerd Roddy Ho has a glamorous new girlfriend, but when a series of increasingly bizarre events occur across the city, it falls to the Slow Horses to work out how everything is connected,’ runs the official synopsis. ‘After all, Lamb knows that in the world of espionage, the London Rules – cover your back – always apply.’

Clocking back in for another shift under the critical eye of Jackson Lamb are Jack Lowden’s once fast-tracked agent River Cartwright, Saskia Reeves as long-suffering Slough House stalwart Catherine Standish, Rosalind Eleazar as recovering coke addict Louisa Guy, and Christopher Chung as obnoxious hacker/IT whiz Roddy Ho.

Kristin Scott Thomas is back as scheming MI5 deputy director general Diana Taverner and James Callis is the hapless agency head she has wrapped around her little finger. Jonathan Pryce is back as River’s ex-spy dad David Cartwright.
Expect more grimily realistic London locations, more blackly comic twists and byzantine espionage scheming as Lamb and his Slough House acolytes butt up against the slick technocrats of MI5 and a variety of other nefarious forces.

Where can you watch Slow Horses?
Where to watch seasons 1-4 are streaming on Apple TV+ now. Sign up for a free seven-day trial to watch them. Subscriptions continue at £8.99/month.