HC Deb 17 December 1980 vol 996 c201W
Mr. Michael Brown

asked the Secretary of State for Social Services whether any cost/yield analysis has been undertaken by his Department with regard to the class 2 national insurance stamp and the class 4 national insurance levy; and whether he will publish the results.

Mrs. Chalker

I regret that no precise information is available on how the cost of collecting national insurance contributions is divided between the different classes of contribution.