Emission intensity

2008/09 (Tonnes)

Tonnes per £m of revenue	726

2007/08 (Tonnes)

Tonnes per £m of revenue	982

2006/07 (Tonnes)

Tonnes per £m of revenue	471

2005/06 (Tonnes)

Tonnes per £m of revenue	521

2004/05 (Tonnes)

Tonnes per £m of revenue	867

Excludes Scope 3 emissions. Includes both continuing and discontinued operations.

Change between years 2004/05 and 2005/06 largely reflects sale of 4 (of 8) UK gas distribution networks in June 2005.

Change between years 2006/07 and 2007/08 reflects the acquisition of KeySpan as if KeySpan had been owned for the entire year.

Revenue for 2007/08 based on pro-forma information also as if KeySpan had been owned for the entire year.