Data for business air travel includes transatlantic flights between the US and UK, flights within the EU and US for routine business activities, and flights originating in the UK to large group events such as sales conventions.
Data for business travel by road is for our global sales fleet except the UK sales fleet. We do not collect data for other modes of business travel including rail and bus.
The CO2 from air freight covers all global routes. We do not calculate CO2 emissions from road, rail or sea freight transport because our central data collection system is not as robust in these areas and the impacts are small when compared to those of air freight transport.
We use conversion factors from the UK Department for Environment Food and Rural Affairs to calculate CO2 from business air travel and air freight.