HC Deb 23 March 1978 vol 946 c740W
Mr. Dudley Smith

asked the Chancellor of the Exchequer what was the highest net income earned after all tax payments in Great Britain in the last appropriate financial year; and how that figure compares with the similar figure for the financial years covering 1970, 1960 and 1950.

Mr. Robert Sheldon

I regret that this information is not available.