There was a southern railway that was in government's hand a year ago or so it did really well in public hands then got sold of - the problem is that it's down to the manager who runs that railway private or publicly owned unfortunately it was sold off - ideology has no place in politics from either party - we have in the past sold of our family silver to think we can wave a magic wand and get it back is a big problem!I'm ambivalent really, but think that a) good management matters more than whether something is public or private, and b) we should be using evidence to support decisions where possible rather than doctrine.
every contract would have to end to get it back and the private firms would certainly go to court!