§ Mr. NorrisTo ask the Secretary of State for the Environment by how much the level of airborne lead has changed since 1985.
§ Mr. Heathcoat-AmoryThe report by the Warren Spring laboratory on airborne lead concentrations in the United Kingdom 1984–88 shows a decrease from 408 nanogrammes of lead per cubic metre of air (ng/m) in 1985 to 190 ng/m in 1988—a decrease of 53 per cent.