It's one of the Jackie & Geordie songs from Close The Coalhouse Door... Off the top of me head I can only remember the last chorus...

When it's ours bonny lad when it's ours
There'll be changes bonny lad when it's ours
when us colliers take control
No more twelve inch seams of coal
No more means test, no more dole
when it's ours (all ours)

I'll see if I can unearth the script and get you the rest AWM