I don't know much about it but being a Ken Loach film I guess it's safe to assume it will be a 'hard-hitting drama'. I'm led to believe the accents are bordering on indecipherable as well...
I don't remember it being that hard to understand, but then I've been up there a fair few times so you get to know a bit of slang and get used to the accent.
Will look it up, Reg. Cheers.