§ Mr. Allan RobertsTo ask the Secretary of State for the Environment if he will list the total annual emissions of (i) nitrogen oxides, (ii) hydrocarbons and (iii) carbon monoxide from all petrol-engined motor vehicles registered in the United Kingdom for each of the following categories (a) over 2 litres cubic capacity, (b) 1.4 to 2 litres cubic capacity and (c) under 1.4 litres cubic capacity in each year since 1970, and the number of vehicles in each of these categories for each of the specified years.
§ Mr. WaldegraveI refer the hon. Member to the answer I gave to him on 20 January at column753.