I am grateful to my hon. Friend for allowing me to put a question to him in his very interesting debate. As he said, I have been running my car on liquid petroleum gas for 13 years to remarkably good effect in terms of engine wear, and of feeling clean environmentally. However, it has been enormously frustrating to see the negative pricing policy adopted by retailers, plus the Government's negative taxation policy, lead to a steady reduction in the number of outlets, so that liquid gas is now hardly available throughout the country. I am fortunate that I still have access to it.

Does my hon. Friend agree that British Gas and others must develop an aggressive, competitive and outgoing positive policy, and should educate retailers of the advantages? Above all, the Government must adopt a positive taxation policy that will result in it being in the interests of the public to use that alternative and very effective fuel.