Some people are understandably still very angry about this today - after all it destroyed their communities. But an unintended consequence is that it was far easier to disentangle the country from coal power. If you're importing it anyway having closed your own mines, there are fewer angry hard working people to protest when you stop.

So the UK now often (as in most of the day, and sometimes for days at a time) has no coal electricity generation.

The other thing they did was take a very big coal power plant and convert it to burn trees. Notionally it burns "waste" wood but in practice the volumes involved mean people are growing trees to sell as "waste" for that plant. This is not great for the environment, but hey at least it isn't coal.