[What follows is an excerpt from John Pilger’s Tell Me No Lies: Investigative Journalism and Its Triumphs:]
Thatcher’s record on the Lockerbie disaster is quite appalling. She has been the chief architect of the monumental cover-up of what happened. When her new Transport Secretary, Cecil Parkinson, came whining to her last September  asking for a judicial inquiry with Privy Councillors attached (an idea which Parkinson himself had put to the bereaved families) she sent him away with a flea in his ear. She was determined there should be no inquiry (except a Scottish “fatal accident inquiry” which can’t find out how or why the bomb got on the plane and how or why British airport security was so lax as not to trace it).
A report in the Washington Post on 11 January  by Jack Anderson and Dale Van Atta revealed that Thatcher and [President George H W] Bush had spoken about Lockerbie in mid-March last year. Anderson suggested that the two leaders had agreed to “low-key” the disaster because neither could do anything about it and did not want to appear impotent. Their intelligence services had reported “beyond doubt” that the Lockerbie bomb had been placed by a terrorist group led by Ahmed Jibril. The group, the report went on, had been paid by the Iranian Government, which wanted a reprisal for the shooting down of an Iranian airliner by an American warship the previous year. Although they knew the terrorists responsible, however (Anderson’s report concluded) Bush and Thatcher agreed to keep it quiet.
[RB: I cannot find the Washington Post report online. However, I suspect it was in the same terms as this report by Jack Anderson in the Lewiston, Maine Sun-Journal on the same date.]