It has been estimated that London, the capital of England, has a population of more than eight million (www.standard.co.uk). With a 0.7% fall in GDP in the second quarter of 2012 (GLAEconomics, 2012) the Mayor of London (MoL) plays an important role in ‘improving London for all’ (london.gov.uk).
The Greater London Authority (GLA) is a top-tier administrative body for London (http://en.wikipedia.org/wiki/Greater_London_Authority) which consists of an elected mayor, the London assembly and permanent members of GLA staff who collaboratively work towards design a better capital (www.london.gov.uk/who-runs-london/greater-london-authority). The MoL is responsible for the economic, environmental, social enhancement of the city (www.london.gov.uk/who-runs-london/mayor/role). Plans and policies are developed to tackle the issues effect London such as transport, housing, health inequalities and environmental issues (www.london.gov.uk/who-runs-london/mayor/role).
Environmental issues can be defined as the overuse of natural resources (Fransson and Garling, 1999) and can be categorised into air, water, radiation and odor pollution (http://www.environment-agency.gov.uk). The United Kingdom (UK), ranked eighth in the world for emit the highest carbon dioxide emissions (http://www.ucsusa.org). The UK generates 586 million tonnes of carbon dioxide a year. Even though significant efforts are being made to reduce our carbon footprint such as building the world's largest wind farm, pollution due transportation however