Emissions from energy supplies were down almost seven percent, and total emissions dropped from 582.2 million tonnes to 568.3 million tonnes between 2012-2013.
Energy secretary Ed Davey said: “These figures show our ambitious plans to cut carbon emissions while growing the economy are working – and show other countries around the world that green growth is achievable and affordable.
“There is no room for complacency – we need to keep working at home to decarbonise the economy and get a global emissions deal in Paris to put the world on a low-carbon path.”