HC Deb 10 March 1969 vol 779 c234W
92. Mr. Blackburn

asked the Secretary of State for the Home Department how many prosecutions there were in 1968 for the emission of black smoke by vehicles.

Mr. Elystan Morgan

Provisional figures indicate that during the first nine months of 1968 there were in England and Wales about 1,950 prosecutions for the unlawful emission of smoke and other harmful substances.