I must confess that, at first, it was no more than a vague suspicion. Then, as time went by, it became a nagging thought. Now, at last, I was able to confirm it beyond any reasonable doubt. Downing Street has got MI6 breathing down my neck.
How can I be so sure? Well, the matter is self-evident. Only last week I was warning people to prepare themselves for some serious bricklaying. Just yesterday it was reported that Mr. Cameron had given up on window counting and was ordering tax inspectors to walk in right through your front door. Unexpectedly.
What's the difference? Not much, if you have got a back door. Otherwise, you have no option but to invite them for dinner.
They are entitled to look at any papers that have figures on them. Including your son's arithmetic exercise book, because he too could be cheating on his sums.
What is unclear to me is whether you have actually got to be at home before they walk in, or whether they could just hide in a cupboard waiting for you to arrive. Surprise!
It's not that one does not welcome the odd surprise, but imagine that you are making passionate love to your wife, and a fellow creeps out from under the bed demanding to see your cash receipt for the condoms. What then?