Britain's Foreign Office has already asked ambassadors and civil servants to fly economy in an effort to cut their carbon emissions. (See Mike's excellent guide to greener flying on why the demand business class seats creates more emissions per passenger mile.) Now the Guardian reports that British Prime Minister David Cameron will be asking a much larger portion of ministers and civil servants to fly economy and avoid business class too:
The move is likely to mean officials have to ensure more flights are taken in economy, and there will be a higher bar to justify business class tickets, though some flights will still be taken in the more expensive cabin. Business class passengers are allocated a greater share of a flight's CO2 output because they occupy more space.