Some of the comments on the Guardian website are hilarious
"In fairness to Cameron, he had just realised he needed to get home quickly in order to shred some documents he had forgotten about.
Nancy, who had been sent to flush documents down the pub toilet, was completely forgotten about in this mad rush of Leveson preparation."
I agree with previous poster - I have 3 children the same age, I have never left any of them anywhere - and I don't have a retinue of PAs, bodyguards & nannies to help keep track of them either. I don't think this is easily done. I don't think it happens to most people. Spin.
Has confirmed what I have suspected for awhile - he's a bit of a Tim-nice-but-dim who has landed where he is more by luck than judgement.