§ Mr. Barnett
asked the Chancellor of the Exchequer what is his estimate of the approximate cost of changing building society financial arrangements so that they charge interest on mortgages net of tax, with such mortgage interest not then being available as a deduction for Income Tax and Surtax.
§ Mr. MacDermot
There are different versions of the arrangement which my hon. Friend describes, and I cannot give him an answer without knowing precisely what he has in mind.