HC Deb 15 March 1967 vol 743 c122W
102. Mr. Allason

asked the Chancellor of the Exchequer what estimate he has made of the loss of revenue resulting from the reduction in tariffs on imported goods in the event of the United Kingdom joining the European Common Market.

Mr. MacDermot

It is not possible to make a precise estimate, but there would be offsets due to additional revenue from tariffs on imports from other countries.