Interview with Joe Gilgun:
http://www.esquire.com/entertainment...view-preacher/
And a 15 minute audio interview. There is also an edited print version of the interview, but the audio is better (right at the end of the print version).
http://moviepilot.com/posts/3926805
He reminds me an awful lot of a lad I used to know, who lived with his girlfriend in the flat below me and J when we were still in Bolton. Similar kind of vibe and mannerisms.