We've been fed this idea Matt, like a victim looking for someone to blame we have been told these people are the ones to point at. ...Its not true, not by a million miles just like the false imigration blames.
Im guessing, because you've not written the whole name of the organisation before shortening it to an abreviation for some reason, The National Audit office? ... appart from being written to make everyone think we're in control of our economy... they suggest 1.2 trillion is a peak. (whatever that super short twisted pargraph of the most interesting actual facts means)
Try this article, it explains stuff in words we can all understand I feel.
'Where did our money go?'