HC Deb 10 April 1981 vol 2 c384W
Mr. McCrindle

asked the Secretary of State for Trade what percentage of all passengers and bags is checked for security reasons at London airports; what criteria are employed in deciding which passengers and bags should be checked for security reasons; what percentage of bags carried in the hold of aircraft is checked either physically or by scanners; and what criteria are employed in comparing the number of passengers on board an aircraft with the total number of bags in the hold.

Mr. Eyre

With certain minor exceptions, all intending passengers and their hand baggage are examined at London airports, using electronic equipment supplemented by physical search. Flights which are judged to be at particular risk are subjected to more stringent checks.

It would not be in the interest of security to give further details.