About
Tense drama series about the different challenges faced by the British Security Service as they work against the clock to safeguard the nation. The title is a popular colloquialism for spies, and the series follows the work of a group of MI5 officers based at the service's Thames House headquarters, in a highly secure suite of offices known as The Grid.
Cast
Harry Pearce
Ruth Evershed
Dimitri Levendis
Erin Watts
Jim Coaver
Ben Kaplan
Calum Reed
Sasha Gavrik
Where to watch
Stream
Amazon Prime Video
Peacock Premium
Philo
Britbox Apple TV Channel 
BritBox
BritBox Amazon Channel
Amazon Prime Video with Ads
Peacock Premium Plus
Fawesome
The Roku Channel
Pluto TV
Amazon Prime Video Free with Ads
Tubi TV
Amazon Prime VideoPeacock PremiumPhiloBritbox Apple TV Channel BritBoxBritBox Amazon ChannelAmazon Prime Video with AdsPeacock Premium PlusFawesomeThe Roku ChannelPluto TVAmazon Prime Video Free with AdsTubi TVRent / Buy
Amazon Video
Amazon VideoAvailability from JustWatch via TMDB. Varies by region and changes over time.
