From the Scotsman.com:

UK climate change impact 'underestimated due to undeclared emissions'

A report published by Christian Aid reveals millions of tonnes of greenhouse gases

produced by some of the UK's top firms are not being declared.

Almost 200 million tonnes of carbon dioxide - equivalent to around one-third of the

UK's currently declared annual emissions - is missing from the annual reports of

major companies on the London Stock Exchange. But these "missing millions"

are only a small fraction of total undeclared emissions.

More:

http://news.scotsman.com/scitech.cfm?id=265432007