Joseph Johnson: As a London MP, I am often struck by the energy inefficiency of office buildings in the capital, whose lights blaze throughout the night, regardless of whether there is anybody inside working in them. Will the Minister say what steps he is taking to tackle light pollution and the energy inefficiency of office buildings? In particular, is there a case to be made for mandatory movement-sensitive lighting systems?

The Minister of State, Department of Energy and Climate Change (Charles Hendry): My hon. Friend raises an extremely interesting issue. I have the sense sometimes that Canary Wharf would be visible from Mars at night, and there are some lessons that we need to learn. The Government are showing leadership on this: simply by using energy-saving measures we have cut our own emissions by 20% in DECC over the year, and all Government Departments have cut theirs by 10%. We need to involve people who work in such buildings so that we can get their ideas about the contribution they can make, because this is as much about human endeavour as the advances in technology.

To read the full Hansard transcript click here

To see all questions asked by Jo click here