The golden rule
The golden rule in Whitehall is that if Maude likes it, it is probably a bad idea and will be badly implemented! Not failed to be true yet.
The number of companies I have met who roll their eyes when you mention the Cabinet Office tells its own story. Maude and his young, naive but eager advisors are brimming full of ideas and jargon, but have no real concept of the implications of what they do or make others do.
I am sure there are some things they have done right, but there is a hell of a lot they have done wrong and so any claims of success or savings from the Cabinet Office should be treated with a great deal of suspicion unless independently verified by people with credibility in that field.