Fallon urged to act on whistleblower's claims about Trident nuclear subs | UK news | The Guardian
http://www.theguardian.com/uk-news/2015 ... clear-subs

He's got nothing to gain from that and everything to lose, so I'd be inclined to believe him.

Maybe, maybe not.
People with grudges can say anything.
I'm pretty sure the next will take nuclear safety seriously.

I used to work at a nuclear facility in Sydney. Multiple layers of security and you needed your pass for pretty much every door, and I worked in one of the least restrictive areas. If you forgot it, then it was generally less hassle to go home and get it than to organise a temporary one for the day.

All that for 7kg of low enriched uranium in a research reactor. So I would expect a sub with a power reactor and weapons grade material to be a little stricter to be honest.