I agree this far with the hon. Lady—that there is a continuing need for greater energy efficiency. We estimate that about 20 per cent. of all the energy used in this country is wasted. However, we have made some progress. During the last 10 years gross domestic product has increased by 25 per cent. while our energy consumption has remained virtually unchanged. Both commercial and domestic energy efficiency are important. That is why the Government have introduced a home energy efficiency scheme. Grants are provided for basic insulation measures and advice is available for low-income households. We have built on the success of the community insulation project that led to the insulation of about 850,000 low-income homes.