We update our sustainability performance on an annual basis. In 2017, we updated our approach to sustainability reporting to include a separate Environmental, Social and Governance (ESG) report that details our 2016 performance and links to our website to provide more real-time updates about our sustainability journey.
Our reporting maintains our commitment to align with international reporting frameworks, such as the Global Reporting Initiative (GRI) Guidelines, The Dow Jones Sustainability Index (DJSI) and the 10 Principles of the UN Global Compact . Assurance of the data contained within our ESG report has been carried out by Corporate Citizenship in accordance with ISAE3000. The 2017 GRI Index can be found here.