The message
from "Clive George" contains these words:

I don't get this argument. They haven't taxed people making their houses
safer.

Yes they have. Where before you could do the work yourself, and thereby
not pay tax on the work 'cos it's DIY, now you have to[1] employ someone
else to do it. Income tax, National Insurance and VAT are then payable
on the money that changes hands.

[1] OK, I know that it's possible to get round Part P by doing it
through Building Control but many people either don't know that or can't
be arsed.

--
Skipweasel
Pay no attention to that man behind the curtain.