Video: Leveson Inquiry: Kelvin MacKenzie says Anne Diamond is a devalued witness Giving evidence at the Leveson Inquiry into media standards, Kelvin MacKenzie, who edited The Sun from 1981 to 1994, questioned Anne Diamond's testimony at the Inquiry on November 28. Her son, Sebastian, died from Sudden Infant Death Syndrome, also know as cot death, in 1991. Mr MacKenzie questioned her evidence saying that Ms Diamond had invited two senior executives from the Sun to Birmingham to discuss details of the paper's coverage of her son's death. "I have met her on two or three occasions since then and she has never said she was forced into doing anything," he said. He also said that he couldn't recall receiving a letter from Ms Diamond at the time "begging [MacKenzie] to stay away" from her son's funeral. "I say [Diamond] is a devalued witness," Mr MacKenzie stated. The current editor of the Sun, Dominic Mohan, will also give evidence to the inquiry into press ethics today.