HC Deb 21 July 1970 vol 804 c72W
Mr. Fox

asked the Chancellor of the Exchequer in view of the present system of collecting tax from self-employed persons, what is the loss to the Exchequer of immigrants working in the United Kingdom on this basis who return home before the tax due can be collected.

Mr. Patrick Jenkin

It is recognised that there is a loss of revenue on account of tax due on business and professional profits earned in the United Kingdom by taxpayers from abroad who return home before it can be collected. The amount lost is not known, but action is in hand to reduce losses on this account.