To ask the Secretary of State for Energy if he will give, for each type of thermal insulation measure, and each other type of energy efficiency measure, where the payback period is 10 years or less (a) the number of homes occupied by claimants of means-tested benefits which would gain from the measure, (b) the cost per home and (c) the total cost of installing the measure in all homes occupied by claimants of means-tested benefits.

The infonnation requested is not available. However, surveys indicate that the proportion of households in social classes D and E where the following thermal insulation measures were appropriate which have them installed in whole or in part are: