^^^
Bob, you are not reading my post with understanding - it was primarily to do with the 1970s.
And you are conveniently totally forgetting the 1973 miners strike.
I have a clear picture of postmen's strikes. My father-in-law was a postman. They would go on strike at the drop of a hat. Surely you will acknowledge that.
BTW, I was a member of a trade union in the 1970s - and have never voted Conservative.