Windscale was a rushed 1940’s military project to get the bomb, using bleeding edge tech copied/borrowed from the US as they pulled cooperation. It has no resemblance to the current (or last 40 odd years of nuclear tech)
https://en.wikipedia.org/wiki/Three_Mile_Island_accident
For such a major diaster the impacts were probably less than living next door to a coal fired power station.
Chernobyl – Again a massively outdated design with inherent flaws and process that do not exist in the modern world.
But what about Chernobyl ?
The World Health Organization study in 2005 indicated that 50 people died to that point as a direct result of Chernobyl. 4000 people may eventually die earlier as a result of Chernobyl, but those deaths would be more than 20 years after the fact and the cause and effect becomes more tenuous.
He explains that there have been 4000 cases of thyroid cancer, mainly in children, but that except for nine deaths, all of them have recovered. “Otherwise, the team of international experts found no evidence for any increases in the incidence of leukemia and cancer among affected residents.”
Fukoshima – still in the scale of destruction of the area a minor impact or blip.
As for my comment I was quoting bigjim’s obviously sarcastic line about “perfectly safe” as for relatively safe coal kills 161 people per TWh Nuclear 0.04. There will be updates post all of this again but the figures will still be exceptionally low