asked the Secretary of State for Trade and Industry, pursuant to his answer of 24 March, on what basis he judged the information requested about the market share of chlorofluorocarbons to be commercially confidential.

There are only two United Kingdom producers of chlorofluorocarbons. If the United Kingdom share of the European market was revealed either company would then be able to calculate the other's market share.

asked the Secretary of State for Trade and Industry, pursuant to his answer of 24 March, if he will now make it his policy to ensure that British manufacturers pursue the development of alternatives to fully halogenated chlorofluorocarbons; and if he will make a statement.

I refer the hon. Gentleman to the answer I gave him on 26 March 1987, at column 243. It is for industry to decide the extent to which it pursues the development of alternatives.