All central Government ministerial and official air travel is being offset from 1 April 2006. Departmental aviation emissions are calculated on an annual basis and subsequently offset through payments to a central fund. The fund purchases Certified Emissions Reductions credits from energy efficiency and renewable energy projects with sustainable development benefits, in developing countries.
DWP has developed data collection systems to ensure that all aviation emissions are captured, enabling the Department to offset its carbon emissions caused by official air travel using the Government Carbon Offsetting Fund, details of which can be found on the climate change pages of the DEFRA website:
http://www.defra.gov.uk/environment/climatechange/carboncost/carbon-offsetting/index.htm