Streaming, rent, or buy Line of Duty – Season 4:
Currently you are able to watch "Line of Duty - Season 4" streaming on Amazon Prime Video, Hulu, fuboTV, Peacock Premium, Britbox Apple TV Channel , Acorn TV, BritBox, BritBox Amazon Channel, AcornTV Amazon Channel, Spectrum On Demand, Acorn TV Apple TV, Amazon Prime Video with Ads, Peacock Premium Plus or for free with ads on The Roku Channel, Pluto TV, Amazon Prime Video Free with Ads. It is also possible to buy "Line of Duty - Season 4" as download on Amazon Video, Apple TV, Fandango At Home, Google Play Movies.