Unfortunately,the Factory management lost control of the workforce and the union shop Stewarts effectively had day to day control.
This led to a torturous relationship with the Government of the day, with every production decision questioned and repeatedly delayed.
As Peter has said before, it came to a point where enough was enough and the contracts were pulled, closure was inevitable after Sterling production was completed.
To be honest though, I wonder, even if L1A1 production contracts went ahead instead of being transferred BSA, would Fazakerley have survived past 1968?
I doubt it very much, as the ROF would have been surplus to requirements with a considerably smaller Armed forces operational by that point.