Britain became the first country to put forward legally binding national carbon cut targets in the draft climate change bill this week.
Enshrining a national commitment to reduce carbon emissions in law is a good start but does not go far enough, according to London's Mayor, Ken Livingstone.
When both men most likely to be vying for the job of Prime Minister come the next election seem to be fighting to outdo each other when demonstrating their green credentials, it can only be good news for the environmental sector.
Ken Livingstone has written to David Miliband calling on the Environment secretary to force London's boroughs to come clean on their levels of litter and frequency of street cleaning.
Action inspires action. Stay ahead of the curve with sustainability and energy newsletters from edie