For the first time, the UK's 100 biggest companies have been ranked according to their greenhouse gas emissions and levels of transparency. The Environmental Investment Organisation (EIO), a UK non-profit research body, has created the ET UK 100 Carbon Ranking, spotlighting the best and worst of Britain's top businesses.
Leading the ET UK 100 are insurers Amlin and financial services giant Aviva, with carbon intensities of 1.21 and 1.36 respectively (MtCO2e/$M turnover).
The EIO has adopted a strict methodology based on complete disclosure of Scope 1 and 2 emissions according to the Greenhouse Gas Protocol, the internationally recognised standard for emission reporting.
Only companies that publicly disclose and also independently verify their emissions data made it into the top category. Among the ET UK 100 companies, although 66% publicly disclose their data, only half of those are also independently verifying their reported emissions.