Major announced the couple's "amicable separation" to the House of Commons. Between 1992 and 1993, Diana hired voice coach Peter Settelen to help her develop her public speaking voice. In a videotape recorded by Settelen in 1992, Diana said that in 1984 through to 1986, she had been "deeply in love with someone who worked in this environment." It is thought she was referring to Barry Mannakee, who was transferred to the Diplomatic Protection Squad in 1986 after his managers had determined that his relationship with Diana had been inappropriate. Diana said in the tape that Mannakee had been "chucked out" from his role as her bodyguard following suspicion that the two were having an affair. Penny Junor suggested in her 1998 book that Diana was in a romantic relationship with Mannakee. Diana's friends dismissed the claim as absurd. In the subsequently released tapes, Diana said she had feelings for that "someone", saying "I was quite happy to give all this up [and] just to go off and live with him". She described him as "the greatest friend [she's] ever had", though she denied any sexual relationship with him. She also spoke bitterly of her husband saying that "[He] made me feel so inadequate in every possible way, that each time I came up for air he pushed me down again." Charles's aunt Princess Margaret burned "highly personal" letters that Diana had written to the Queen Mother in 1993. Biographer William Shawcross considered Margaret's action to be "understandable" as she was "protecting her mother and other members of the family", but "regrettable from a historical viewpoint". Although she blamed Camilla Parker Bowles for her marital troubles, Diana began to believe her husband had also been involved in other affairs. In October 1993, Diana wrote to her butler Paul Burrell, telling him that she believed her husband was now in love with his personal assistant Tiggy Legge-Bourke—who was also his sons' former nanny—and was planning to have her killed "to make the path clear for him to marry Tiggy". Legge-Bourke had been hired by Charles as a young companion for his sons while they were in his care, and Diana was resentful of Legge-Bourke and her relationship with the young princes. Prince Charles sought public understanding via a televised interview with Jonathan Dimbleby on 29 June 1994. In the interview, he said he had rekindled his relationship with Camilla in 1986