asked the Chanceller of the Exchequer, on the basis of available information, what estimate he makes of the percentage share of national income held by the highest paid 1 per cent., 5 per cent., 10 per cent., 20 per cent., 50 per cent. and 80 per cent. in 1945 and after each successive five-year period, or at whatever dates such information is available, including his latest available estimate.
The available statistics on the distribution of income in the United Kingdom were published in Economic Trends, No. 295, May 1978 and No. 304 February 1979. The estimates cover the period from 1949, the year nearest to 1945 for which data are available. They relate to tax-units, not individuals, and are based on income from various sources combined.