The Department for Children, Schools and Families makes an annual report to the Sustainable Development Commission on carbon dioxide emissions from offices as part of their returns for the Sustainable Development in Government (SDiG) report.
From the 2007 and 2008 SDiG reports—available in full under ‘Publications’ at:
http://www.sd-commission.org.uk/
—carbon dioxide emissions for the office estate was reported as (a) 10,321 tonnes in 2006-07 and (b) 12,316 tonnes in 2007-08 which equated to (aii) 1.705 tonnes per full-time equivalent and (bii) 1.789 tonnes per full-time equivalent.