100. Mr. Alan W. WilliamsTo ask the Secretary of State for the Environment whether he will make it his policy to agree to a ban on the production and use of methyl chloroform when the Montreal protocol to control chlorofluorocarbons is renegotiated in an international conference in London in June.
§ Mr. Heathcoat-AmoryIt is the Government's aim ultimately to phase out all ozone-depleting substances.