§ Mr. Bob Russell
To ask the Secretary of State for the Environment, Transport and the Regions what research he has carried out to develop alternative fuels for aircraft; and if he will make a statement. 
Mr. Robert Ainsworth
None. We are aware of industry research which has identified several potential alternative fuels. For technical, economic or environmental reasons, singly or in combination, none seems viable at present. The possible exception is hydrogen, which is being examined further.