I'm sure there are probably a good few people rubbing their hands with some relish at the thought that private schools might feel the squeeze from this edict from the Charities Commission that they have to prove the value of their contribution to the wider community to retain their charitable status.

But before they get too excited, perhaps they might want to think about the numbers. I read that independent schools have about 600,000 pupils. If we accept the figures put forward by Nick Clegg, I think, when he was talking about the "pupil premium" in which he said, if memory serves, that the average cost was about £9,000 per year per pupil - which allowing for endowments and so on is probably a bit more than the average fees - it is an "industry" with a turnover of nearly £5.5 billion per year.

The statements about the level of charitable benefit they receive suggest that it amounts to about £100 million. This is therefore just under 2% of their combined turnover. Hardly insurmountable if they decide to stick two fingers up to the Charities Commission. But there's another side to it, isn't there. If we accept government figures that they spend about £6,000 per year on average on each state school pupil, then the 600,000 pupils whose parents are often scrimping and saving to put them through a private school are saving the state sector just over £3.5 billion.

It seems to me that whatever you think of private education, the charge that they do not contribute financially to the state sector through their customers' taxation cannot be upheld. Of course, since most of the charitable benefit is presumably in the form of reclamation of VAT on some expenses and I would argue that nobody should pay VAT, the most iniquitous tax on production we have, they would not have such a benefit in my fiscal regime anyway!