He's told the Radio Times would then leave Knight voicemails to see how close he was.
Cillian Murphy has revealed he recorded Birmingham pub-goers to perfect his accent in Peaky Blinders.
The Irish actor who plays Tommy Shelby, says he had a meeting with the show's creator Steven Knight at the Garrison pub, where he recorded the chatting and songs of locals.
He's told the Radio Times would then leave Knight voicemails to see how close he was.