Harrow is one of the greenest areas in the UK when it comes to emissions of CO2, new figures have revealed.
According to figures published by the Department for Energy and Climate Change, just 3.4 tonnes of CO2 per head were emitted in the local authority area in 2013.
This figure is the ninth smallest number for any local authority area in the UK.
The CO2 emissions per head was also 24% lower in Harrow in 2013 compared to 2005.
Elsewhere in west London, Westminster emitted the most CO2 with 13.4 tonnes per head in 2013.
Across the whole of the UK, seven tonnes of CO2 were emitted per head of the population in 2013, a slight decrease on the 7.1 tonnes emitted per head in 2012.