Ms. Fisher wrote a brief letter absolving H-P of responsibility and declaring that there were "many inaccuracies" in the earlier letter, without specifying what they were.

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So, and I take responsibility for that, and I wrote a letter to every member of the Parliamentary Labour Party, setting out why I, why I had, I had stayed, where my doubts were and why I'd stay.

BBC: Clare Short: "We were duped"

Today, the Obama Administration sent a letter to drug manufacturers reminding them of their responsibility to report the discontinuation of certain drugs to the FDA and encourages companies to voluntarily disclose to FDA potential shortages in cases where disclosure is not currently required by law.

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"I take my share of responsibility for not uncovering wrongdoing earlier, " he wrote in the letter, dated March 12 and published by lawmakers.

CNN: James Murdoch resigns as BSkyB chairman

The letter has been co-ordinated by Scientists for Global Responsibility.

BBC: Scientists call for defence cuts

Libya is already on record in a letter to the Security Council last August, saying that it "accepts responsibility for the actions of its officials" over Lockerbie, so even the prime minister's denials of responsibility in his BBC interview cannot be taken at face value.

BBC: NEWS | UK | Politics | Libya: covering a retreat