HC Deb 15 April 1986 vol 95 c328W
Mr. Gareth Wardell

asked the Secretary of State for Transport if any further progress has been made towards developing a tamper-proof mechanism on fuel-injection equipment for heavy goods vehicles.

Mr. Peter Bottomley

No. At present it still does not seem possible to overcome the practical problems for preventing tampering whilst at the same time permitting bona fide adjustments to be made.