Performance
Excluding acquisitions the carbon footprint decreased by 3.5% from 629.1 tonnes per £m sales to 606.9 tonnes per £m sales. Including acquisitions the carbon footprint increased by 0.6% to 632.8 tonnes per £m sales.
Definition
Carbon footprint is defined as tonnes of CO2 equivalent emissions, divided by £m revenue.
CO2 equivalent emissions are calculated by taking electricity and gas usage in kilowatt hours and multiplying by country specific conversion factors provided by DEFRA (Department for Environment, Food & Rural Affairs).