Data relates to the calendar year 2008. Most CR data is collected quarterly through our financial reporting system. This includes data on energy and CO 2 from our buildings, social investment, employment infringements, employee diversity, training and wellbeing, recycling and paper use. These data cover 95,286 employees from wholly- owned WPP companies.

We collect air travel data via an external provider, as part of our airline procurement process. We have detailed analysis covering our major cities relating to approximately 70% of our journeys. We estimate the balance based on internal records.

We identify marketing infringements involving WPP companies from public reports by regulatory authorities and directly from WPP businesses through our financial reporting system.