Martin Compston unsuccessfully auditioned for the starring role of Thomas Shelby in Peaky Blinders
Cillian Murphy was also in the running for the role, and Compston knew he wouldn't get it
Compston couldn't do a Birmingham accent and had to have his lines recorded by Jed Mercurio
Despite not getting the role, he landed a role as DI Steve Arnott in Line of Duty
The Line of Duty cast, including Adrian Dunbar and Vicky McClure, will return for a three-part BBC1 special
The special will provide the explosive climax that was denied to fans in the previous series
Fans hope Bent Copper H will finally be unmasked in the three new episodes of Line of Duty
The special will air on BBC1 next year.