asked the Chancellor of the Exchequer how many (a) single people without children, (b) married men without children, (c) married men with children, (d) one-parent families, and (e) working wives were taxpayers in the latest aivalable period; and how many are estimated to be taxpayers in 1978–79.

The figures are as follows:in the tax law, I have noted my hon. Friend's suggestion. Recommendation 17.35 is a matter for my right hon. Friend the Secretary of State for Scotland and my right hon. and learned Friend the Secretary of State for Wales.