Well, i grew up in the Thatcher years. They were grim. I know. I was there.
The graphs you posted have a major flaw. They do not show the huge north/south divide. For example, take the Yorkshire ward of 'Heaton,' and compare it to Thatchers 'Finchley' and you will see that one was booming under her reign and one was a ghost town of closed factories and high unemployment.
The millions of unemployed during her term were mainly north of the Watford Gap and therefore don't matter?
There are two halves of the UK. Your graphs do not show this
I think this one sums it up