He was visiting a zero carbon home in Bow, accompanied by Ruth Kelly in a kind of Batman and Robin formation, when he spotted - amongst the insulation and woody-burners - a telly:

Mr Harris, from ZEDfactory, said just because someone lived in a zero carbon house, it did not mean they had to adhere to a certain lifestyle. "We are not saying you have to live without a car or have to eat local organic food - people are their own free agents," he said.

Mr Brown apparently then stroked his chin and mumbled, "It's a nice big telly", before Kelly croaked "Holy sustainable development, Vatman... say something sensible that might impress the Cameron clan but keep property developers onside." Find out if Brown and Kelly get out unscathed by reading the full instalment here.