I've no reason to doubt the words of a 'centre manager' or a 'regional manager' but it would still be good to see the actual evidence of what they are saying rather than just having their word for it. For example, was there an email chain that proves that "London" were actively overriding common sense? Some meeting minutes somewhere? How do we know that the full picture was communicated to "London" effectively in the first place? (root cause analysis etc)
I know I'm asking for evidence that we're probably never going to be witness to, but without that it comes down to one person's word against another which, whilst sounding convincing and perfectly believable, isn't 100% conclusive proof that "London" are totally to blame each and every time.
Here's a hypothetical thought....what if the aforementioned "regional manager" was a staunch Labour activist. Might it not be in his/her interests to 'distort' the information he/she was receiving from "London" because the worse they can make things look the more likely it is that they will be voted out and the system made 'better' in the longer run?
Don't get me wrong, I'm not for one minute saying that's what happened in the case you raise, I'm just wondering whether we can 100% rule it out as a possibility in some cases.