Apart from her impact on the Conservative and Labour party, Thatcher had some important effects on the nature of British politics more generally
In most cases these are far from what she would have liked and must be considered as unintended consequences of her time in power
The first division that she helped accelerate was regional; the Conservatives did far better in the south and east of England and lost support in the north of England, Scotland and Wales
While the Conservatives had won 21 out of 71 available Scottish seats in 1979, this had fallen to 10 by 1987; in 1997, the party was wiped out in Scotland
Scottish and Welsh nationalism gained a boost from the local reaction against the decline of their traditional industries
This movement accelerated with devolution under New Labour, something to which Thatcher was opposed