asked the Secretary of State for the Environment what is his Department's estimate of the balance of benefits in energy and cost terms of insulation of cavity walls in the average three-bedroom house.
authorities in England and Wales is also included, but information on current expenditure is not available. A comparable figure for 1973–74 is not available as returns of local authority capital expenditure are incomplete. There is no reliable means of estimating total expenditure in 1974–75 or future years.
My right hon. Friends the Secretaries of State for Scotland and Wales have responsibility in their respective countries. Cultural activities in England are the responsibility of my right hon. Friend the Secretary of State for Education and Science.