[The text of Peter Biddulph's letter, as published in The Sunday Times on 20 June, is as follows:]
You report that Libyan Semtex “was used in the bombing of Pan Am Flight 103 at Lockerbie, when 270 were killed, for which Libya has paid more than £5m to each family” (“Gadaffi to pay £2bn to victims of IRA bombs”, News, last week).
As a longtime researcher — jointly with Dr Jim Swire, among others — into the Lockerbie bombing, I have found no mention of the use of Libyan Semtex. Nor does one appear in any associated documents or even allegations by those involved in the inquiry (including the Scottish police, the FBI and the CIA).
The origins of the Semtex used and the explosive enhancer have never been proved or even guessed at. The critical evidence advanced at trial — that the timer that triggered the bomb came from a batch sold to Libya — is itself now subject to deep suspicions that it was manufactured and planted.