HC Deb 22 July 1968 vol 769 c19W
Mr. Richard Wainwright

asked the Chancellor of the Exchequer what approximate amount of the yield of Surtax in the years 1965–66, 1966–67 and 1967–68 arose from the assessment of husband and wife as a unit instead of as wholly separate persons.

Mr. Harold Lever

The information on which to base these estimates is not available.