For those still anxious about their savings in NR - and who haven't already jumped ship (perhaps nobody fits this description at this stage) - the following article might provide some reassurance.
http://www.bbc.co.uk/blogs/thereporters/robertpeston/2007/12/rock_and_nationalisation_2.html
http://www.bbc.co.uk/blogs/thereporters/robertpeston/2007/12/rock_and_nationalisation_2.html