(MtCO 1,188 Based upon spend with 733 key suppliers: estimated using Defra 2009 conversion factors: Annex 13 Water use (tCO2e) 129 Calculated using Defra 2009 conversion factor of 0.2760 Commuting (UK) (tCO2e) 2,948 Extrapolation of survey returned by 15% of UK employees: converted using Defra 2009 conversion factors As well as being part of the UN Global Compact’s Caring for Climate initiative, we signed the Copenhagen Communiqué led by the Prince of Wales’s Corporate Leaders Group on Climate Change, calling for an ambitious, effective and equitable climate deal at the Copenhagen UN Conference of Parties (COP 15) in December 2009.