HC Deb 02 April 1979 vol 965 cc542-3W
Mr. Hodgson

asked the Secretary of State for the Environment how many suppliers there are of (a) steel window frames and (b) aluminium window frames approved under the Government's method of building scheme.

Mr. Marks

Following a national advertisement, the Property Services Agency evaluated manufacturers' submissions on cost and performance. There are (a) one manufacturer of steel window frames and (b) four manufacturers of aluminium window frames. In addition, there is one manufacturer of timber window frames.