As in previous years we’ve had all of our sustainability data independently assured.

Having robust non-financial information gives us confidence in making business decisions and helps us to build trust with our stakeholders. And, as the leading provider of assurance for FTSE 100 sustainability reports, we feel we should lead by example.

Our internal audit team provide reasonable assurance of the sustainability narrative and performance data in our annual report and sustainability scorecard. They also they oversee a review of the total impact (TIMM) data by an independent PwC expert.

We’ve received limited assurance from our financial auditor, Crowe Clark Whitehill (CCW) for our sustainability data each year since 2012. Their 2017 review covered our data and targets for quality and ethics, workplace and diversity, environment, community involvement, social inclusion, and supply chain.

Our Reporting Criteria document provides further details of the metrics reported, and forms the basis for CCW’s review. Their full, independent assurance statement is also available in our sustainability scorecard and commitments document, in the data and downloads section of our Annual Report.

Summary of our sustainability reporting assurance:

2017 provider

Extent of assurance

PwC Internal Audit

Reasonable assurance of sustainability data and narrative (includes Quality & ethics, Workplace & diversity, Community, Social inclusion, Environment, and Supply chain information) and our TIMM results.

Crowe Clark Whitehill

Limited assurance of all 2017 sustainability performance data to the ISAE 3000 standard, and – for greenhouse gas emissions – to the ISAE 3410 standard. CCW also audit the financial data in our annual report.

Contact us

Bridget Jackson

Head of Corporate Sustainability, PwC United Kingdom

Tel: +44 (0)20 7213 2435

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