David Cameron speaking at today's launch of the Conservative's green energy policy © Greenpeace/Daniel Beltra
We're used to having some unusual people descending on our offices, but today's visit by David Cameron and several other members of the shadow cabinet is the most leftfield (or should that be rightfield?) visitation for some time. But they were here to launch a new policy that uses many of our own demands for renewable energy, a vital component in the struggle to limit the impacts of climate change.