Modelling World War Three: What would happen if a nuclear bomb were fired at Britain? ...if a hydrogen bomb equivalent to the largest ever tested by Russia was dropped on the UK capital, nearly six million would be killed, with the blast radius stretching from Reading to Southend. ... According to Popular Science, a separate 2013 study found that a similar 100-bomb war would, regardless of the number killed in the blasts themselves, result in the deaths of 2 billion people due to starvation.
