HL Deb 11 May 1993 vol 545 c63WA
Lord Stoddart of Swindon

asked Her Majesty's Government:

Whether the use of unleaded petrol in vehicles without catalytic converters has improved the quality of air in towns and cities.

The Parliamentary Under-Secretary of State, Department of the Environment (Lord Strathclyde)

Since unleaded petrol was first introduced in 1986 the amount of airborne lead in the UK has fallen by 70 per cent.