No, never heard of 'em Blue.
I am a bit of a Shop Steward/Unionist type though.
I like to point out management failings due to the fact they take pleasure in attacking us & refuse to defend our position, not all the time, but often enough for resentment to breed.
The only concern our lot have is productivity & they have little regard for the Health & Safety of a certain section of staff.
Some people seem to be 'protected' & can do no wrong even when doing wrong.
Office staff have 'very adaptable rules' which are altered to suit at any given time.
In my work enviroment there is a deeply cultured mistrust between one faction & another.
I shall say ney more aboot it.