From the Independent in the UK: "Ivan Rogers, Mr Blair's principal private secretary, told Sir David King, the Prime Minister's chief scientist, to limit his contact with the media after he made outspoken comments about President George Bush's policy on climate change." Specifically, King attacked the Bush administration for failing to take climate change seriously, saying "In my view, climate change is the most severe problem we are facing today, more serious even than the threat of terrorism." [Link]

In a leaked memo, Mr Rogers ordered Sir David - a Cambridge University chemist who offers independent advice to ministers - to decline any interview requests from British and American newspapers and BBC Radio 4's Today .

"To accept such bids runs the risk of turning the debate into a sterile argument about whether or not climate change is a greater risk," Mr Rogers said in the memo, which was sent to Sir David's office in February. "This sort of discussion does not help us achieve our wider policy aims ahead of our G8 presidency [next year]." The move will be seized on by critics of Mr Blair's stance over the Iraq war as further evidence that he is too subservient to the Bush administration. It will also be seen as an attempt to bolster the Prime Minister's case for pre-emptive strikes to combat the threat of international terrorism, which he outlined in a speech on Friday.

Sir David, who is highly regarded by Mr Blair, has been primed with a list of 136 mock questions that the media could ask if they were able to get access to him, and the suggested answers he should be prepared to give. One question asks: "How do the number of deaths caused by climate change and terrorism compare?" The stated answer that Sir David is expected to give says: "The value of any comparison would be highly questionable - we are talking about threats that are intrinsically different."