I don't know how much responsibility Thatcher should take for desimating industries/communities, something had to be done about unions, we were in a continual circle of strikes.
The Scargills of this world must take a fair share of the blame.
I wholeheartedly detested her when she was in power, still the best PM in my lifetime by a considerable margin, alas, we never got to see what John Smith was made of.