HC Deb 18 January 1971 vol 809 cc213-4W
Mr. Thomas Cox

asked the Chancellor of the Exchequer how much money is estimated to be lost to the Exchequer each year through the avoidance of income tax, selective employment tax and social security contributions by those people avoiding their statutory obligations.

Mr. Higgins

Because of its nature, no estimate can be made of the amount, but I do not believe it to be widespread.