Currently available on 2 streaming services.

Streaming, rent, or buy Line of Duty – Season 4:

Currently you are able to watch "Line of Duty - Season 4" streaming on TV 2, BritBox.

Cast

Martin Compston
DS Steve Arnott
Vicky McClure
DC Kate Fleming
Adrian Dunbar
SI Ted Hastings
Gregory Piper
Ryan Pilkington
Nigel Boyle
DI Ian Buckells
Kelly Macdonald
DCI Jo Davidson
Owen Teale
Philip Osborne
Anneika Rose
Farida Jatri