The Kyoto Protocol, which was adopted in December 1997 and came into force in February 2005, is an international agreement linked to the United Nations Framework Convention on Climate Change (UNFCCC). Its main feature is that it sets binding targets for 37 industrialised countries and the European community for reducing greenhouse gas (GHG) emissions. The European Union (EU) target is set at a reduction of 8%, which is to be met by 2008-2012 and is based on reduced GHG levels in comparison to 1990 levels. The EU has ratified the Kyoto Protocol and the UK’s legally binding target under an EU burden sharing agreement is 12.5% of 1990 levels by 2008-2012. The United Kingdom is the world’s 8th largest emitter of carbon dioxide and London is responsible for 8% of these emissions, producing 44 million tonnes of CO2 each year. This implies a target of stabilising London and the UK’s emissions at 60% below 1990 levels by 2025.