HC Deb 17 July 1979 vol 970 c470W
Mr. Knox

asked the Chancellor of the Exchequer what he estimates to be the loss of revenue so far entailed as a result of the delays in the collection of import Customs duties arising from the strike of staff operating the computerised customs clearance system at London's Heathrow airport.

Mr. Peter Rees

The delays are not expected to cause any loss of revenue.