Yet another interesting article (link below.)
http://www.christianwolmar.co.uk/articles/rail/555.shtml

"In truth, then, we have to rely on Network Rail’s managers being competent which, so far, they appear to be so. However, the rail industry would be in a mess if they were not, and, worryingly, there would be precious little that anyone could do about it. With Network Rail spending over £5.5bn per year, there must be a few civil servants and indeed ministers who occasionally wake up in a cold sweat thinking about it. Or at least one would hope so. Just possibly, they should exercise their minds to thinking of ways of boosting the corporate governance issue before the inevitable happens one day and a lunatic gets hold of the asylum."