Line of Duty season 6 cast: Who will Kelly MacDonald play? Jed Mercurio reveals details

Sign up for FREE now and never miss the top Royal stories again. SUBSCRIBE Invalid email We will use your email address only for sending you newsletters. Please see our Privacy Notice for details of your data protection rights.  Line of Duty is the award-winning British crime drama starring Martin Compston, Vicky McClure and Adrian Dunbar who work for the anti-corruption unit, AC-12. Each season, AC-12 is joined by several guest stars including Craig Parkinson, Lennie James and Keeley Hawes. Kelly MacDonald stars in the upcoming series but who will she play? Express.co.uk has everything you need to know.   Trending  Who will Kelly Macdonald play in Line of Duty season 6? Earlier this year, the BBC announced Trainspotting star Kelly Macdonald had joined the cast of Line of Duty. Viewers will also recognise Emmy Award winner Macdonald as Gina in The Girl in the Café and Della Smith in the State of Play. For her role as Carla Jean Moss in No Country for Old Men, Macdonald was nominated for a BAFTA Award for Best Actress in a Supporting Role. Macdonald is also well known for her role as Margaret Thompson in Boardwalk Empire and as Anna in BBC’s The Victim. Sadly, the cast and crew were one month into filming the new series before production as shut down due to the coronavirus pandemic.  READ MORE Line of Duty: H's identity exposed in season 6 bombshell by ex-star?   At the time, very little was known about Macdonald’s role on the show and who exactly she would be playing. Speaking on the Albi podcast, A Stab in the Dark, Line of Duty creator Jed Mercurio revealed more details about Macdonald’s character. Mercurio said: “Well we have Kelly Macdonald, who plays DCI Joanne Davidson, who is a senior investigating officer on a murder investigation team and she is investigating an unsolved high-profile murder case and her handling of the case creates question marks which bring AC-12 in, the anti-corruption unit, to look at whether the case is being mishandled or misdirected.” At the end of Line of Duty season five, all the clues and rumours pointed too Ted Hastings (played by Adrian Dunbar) being the mysterious ‘H’ – the corrupt officer working with organised crime syndicates.   He said: “There was always an idea that this institutional corruption involving collusion between corrupt police officers and organised crime would play out through the series and would become something that was part of the examination of police corruption on an institutional level. “But it was always regarded that this would be a phantom that we would get closer and closer to through each season as we progressed with their investigation. “It was just that we’d reached a point where we were looking internally through the character of Dot Cotton (Craig Parkinson) who was the character known as the Caddy and that then created the idea that he obviously didn’t work alone, that he had connections within the area of the organisation in which he served. “That then led us to cons