§ Mr. Sainsburyasked the Secretary of State for the Environment what information he has on the number of existing housing units which had cavity foam insulation installed between October 1974 and March 1975, October 1975 and March 1976, and October 1976 and March 1977.
§ Mr. ArmstrongFollowing is the available information based on regular surveys carried out by Audits of Great Britain:
NUMBER OF HOUSEHOLDS LIVING IN DWELLINGS IN WHICH CAVITY FOAM INSULATION WAS INSTALLED: Great Britain: October to March 1974–75 to 1976–77 Number of Households October to March, 1974–75 69,000 October to March, 1975–76 24,000 October to March, 1976–77 27,000