Boris' hot air could power London, say campaigners

Friends of the Earth head of campaigns Andrew Pendleton said: "If we could harness the hot air generated by Boris we could probably power the whole of London.

"Shale gas has been hugely over-hyped and there's little evidence it will lead to cheaper fuel bills.

"It's dirty, unnecessary and a threat to our local environment and climate - any attempt to frack in the London area would surely provoke widespread opposition.

"Instead of gambling with shale gas we should be building an affordable power system based on the UK's huge renewable energy potential, such as the London Array."