Just received a daily media brief in my inbox and this little pearler was buried in it: Channel 4: A report by the Defence Nuclear Safety Regulator has raised safety issues about the safety of the nuclear reactors in the Royal Navys submarines, including that they could be vulnerable to leaks. Nuclear safety campaigner, John Large, said that the submarines are fighting battle ships so shake around a lot which could cause pieces of the reactor to fall off and potentially cause disaster. It also compared the designs of the PWR2 and PWR3 nuclear reactors. John Large said that the PWR3 is safer as it holds everything together more and therefore less likely to shake about. Apparently this John Large character is some sort of self-appointed nuclear safety expert and people have spent a fair amount of time refuting the absolute bollocks that he comes out with for some years. I have to say that if that is the only evidence he can come with for questioning SSBN (is that the right term? I'm not in the Andrew) safety - they shake about a lot - then he is quite clearly not a nuclear safety genius but more of a comedy God. I haven't stopped laughing since.