HC Deb 19 December 1979 vol 976 c211W
Mr. Richard Wainwright

asked the Chancellor of the Exchequer what would be the estimated net gain to the Exchequer if the rates of income tax on taxable incomes over £10,000 prevailing in 1978–79 were to be restored.

Mr. Peter Rees

About £690 million in a full year at 1979–80 income levels.