Before I reply to the question, let me say that I am very conscious that Ivan Cameron's funeral took place today. I am sure the whole House will wish me to say that our thoughts and prayers are with David and Samantha on what must be a particularly unbearable day.

Our proposals to strengthen the energy efficiency provisions of the building regulations in 2010 will include comprehensive plans to build on previous measures to improve compliance. A number of other initiatives are also under way, including reform of the building control process, extending the powers for prosecution, and simplifying guidance.