I know this matter slipped from view, but an IISS Strategic Comment is worth a read, partly as it identifies an issue which officialdom would rather keep from public view - nuclear security as illustrated by:
It was a missed opportunity that, for reasons of national security, nuclear-security issues were not included in stress tests of 143 reactors ordered by the European Union after Fukushima.
Link:http://www.iiss.org/publications/str...ter-fukushima/

I noted that at the 2011 summit the UK became the 'lead' for one of the nine areas for work 'Protecting sensitive information related to nuclear security (United Kingdom)'. Given the history of HMG over the UK's own nuclear history an excellent choice, as one insider recently commented akin to "There are many decisions made where there are no official records".