Line of Duty is back – and much to the delight of fans.The eagerly-anticipated sixth instalment of the hit cop shows graces our screens on Sunday night.And while AC-12 regulars DS Steve Arnott (Martin Compston), DC Kate Fleming (Vicky McClure) and Ted Hastings (Adrian Dunbar) will again be at the forefront of the action, we at the Daily Star decided to take a look back at some of the actors who have helped make the BBC drama a huge success.Hollywood star Thandie Newton, the BAFTA-winning Jason Watkins and former Hollyoaks star Will Mellor have all featured in the hit show.But we focus our investigations on corrupt DCI Tony Gates (Lennie James), who starred in the first-ever instalment of award-winning writer Jed Mercurio’s now legendary.
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