Will Mellor, Arsher Ali and Leanne Best have joined the new season of Line of Duty.

Season 3 of BBC Two’s police corruption drama began filming in Belfast last month, with Mrs Biggs star Daniel Mays playing AC-12’s “most dangerous adversary yet”.

The three new cast members will play the other officers in the Armed Response Unit with Mays’ character, Sergeant Danny Waldron.

Will Mellor (In the Club) plays PC Rod Kennedy, Arsher Ali (The Missing) plays PC Harinderpal ‘Hari’ Bains and Leanne Best (Fortitude) plays WPC Jackie Brickford.

Writer and creator Jed Mercurio commented: “Sgt Danny Waldron appears to run a team of crack firearms officers, but hidden tensions simmer beneath the surface. We’re all hugely excited that Will Mellor, Arsher Ali and Leanne Best have agreed to play these pivotal roles.”

The official synopsis for Season 3 reads: “When AC-12 are called in to investigate Danny’s conduct, even they could find themselves in the firing line.”

BBC Two commissioned a third and fourth season of Line Of Duty last April, after the second season concluded with an audience of 4.1 million viewers.

Returning cast members include Martin Compston as Detective Sergeant Steve Arnott, Vicky McClure as Detective Constable Kate Fleming and Adrian Dunbar as Superintendent Ted Hastings.

Are you looking forward to Season 3? Let us know below…