Mr. Alan W. Williams
To ask the Secretary of State for the Environment, Transport and the Regions what percentage of houses in England and Wales have(a) three, (b) four, (c) five and (d) six inches of loft insulation. 
§ Mr. Mullin
It is estimated that around 15 per cent., 24 per cent., 10 per cent. and 17 per cent. of homes with accessible lofts in England and Wales have respectively three, four, five and six inches or more of loft insulation. A further 11 per cent. have two inches or less and in 13 per cent. of cases the depth of the insulation is not known. Over 6 per cent. have no loft insulation and there are no data for the remaining 3 per cent. of homes.
GfK Home Audit, Ownership of home insulation at December 1998.