Combined Scope 1 + 2 + 3 Intensity is calculated by adding together a company's Scope 1 and Scope 2 emissions at 100% (disclosed or inferred) + 50% of Scope 3 emissions (disclosed or inferred). Inferred figures are based on the highest reported intensity for that sector, according to the Benchmark Company Tables.

• Scope 1 emissions represent 'all direct emissions' arising from a company's direct operational activities.
• Scope 2 emissions represent 'indirect emissions' generated from the purchase of electricity.
• Scope 3 emissions represent 'all other indirect emissions', such as distribution of goods, transportation of purchased goods, transportation of waste, disposal of waste, investments, employee commuting, business travel etc. (The GHG Protocol Scope 3 Standard proposes a total of 15 categories which can be viewed on the GHG Protocol website.