Conservation (Research Expenditure) 33. Mr. Rost asked the Secretary of State for Energy what is the current level of research and development expenditure in the United Kingdom on energy conservation. Mr. Eadie Public sector expenditure in 1974–75 on R and D related to energy conservation by final consumers is estimated to be approximately £11 million. In addition, a substantial part of the R and D effort of the nationalised industries is devoted to improvement of their internal energy economics. No estimate is available for the private sector.