Devon and Cornwall will be inundated with refugees? Ifs, maybes, and conjecture

[NorthernRaider]

God its like pulling teeth.

"Dirty bombs are also unlikely to have enough radioactive material to contaminate large areas even if dropped from height."

Wrong, wrong, wrong on all counts, a dirty bomb only needs to be a few grams of radioactive material, A FEW GRAMS, it doesn't even need to be emitting gamma radiation it can be the much weaker Alpha particle material, it just needs to be scattered in the wind a few meters off the ground and it doesn't even need to spread evenly, it just needs to linger around that area meaning until its totally decontaminated that area is unsafe, you only need to inhale a particle or two of alpha emitting particles and it will kill you within weeks or months. Governments would face multi billion pound bills to clean up the infect areas or depopulate them and isolate them for a few hundred years.

You don't need to make people glow in the dark, just make it so the environment is unsafe.