• compulsory water metering
• more water efficient homes
• greater use to be made of rainwater harvesting
• more green spaces to "cool" the city
• steps to reduce leaks from water mains through extension and improvement of the city's Victorian-era drainage system.

Green Party London Assembly member Jenny Jones said the measures contained "nothing new" and were "inadequate". "These are all good measures, we have got to do all these things," she said, "But where are the big new ideas?" Ms. Jones also added, "If the mayor ignores the contribution transport makes to climate change, he is ignoring a major part of the problem."

Global warming is expected to give London and its surrounding area longer, hotter summers as well as warmer, wetter winters with added problems of more frequent heat waves, droughts and flash floods from rising sea levels and downpours.