As part of the independent verification, Bureau Veritas undertook: – interviews with relevant personnel of WPP responsible for GHG emissions accounting, waste data, H&S and employment data; – a review of WPP information systems and methodology for data collection, aggregation, and analysis; – a review of information and calculations used to determine GHG emissions, including the relevant activity data and the emissions factors applied; – a remote review of a sample of the Selected Information against the corresponding source documentation from 9 of WPP’s operations worldwide.