by the Prime Minister and by senior Privy Counsellors, and, according to the BBC, was decided after two weeks of talks. Charles formally agreed to the divorce in a written statement soon after. In February 1996, Diana announced her agreement after negotiations with Charles and representatives of the Queen, irritating Buckingham Palace by issuing her own announcement of the divorce agreement and its terms. In July 1996, the couple agreed on the terms of their divorce. This followed shortly after Diana's accusation that Charles's personal assistant Tiggy Legge-Bourke had aborted his child, after which Legge-Bourke instructed her solicitor Peter Carter-Ruck to demand an apology. Diana's private secretary Patrick Jephson resigned shortly before the story broke, later writing that she had "exulted in accusing Legge-Bourke of having had an abortion". The rumours of Legge-Bourke's alleged abortion were apparently spread by Martin Bashir as a means to gain his Panorama interview with Diana. The decree nisi was granted on 15 July 1996 and the divorce was finalised on 28 August 1996. Diana was represented by Anthony Julius in the case. The couple shared custody of their children. She received a lump sum settlement of £17million (equivalent to £million in ) as well as £400,000 per year. The couple signed a confidentiality agreement that prohibited them from discussing the details of the divorce or of their married life. Days before, letters patent were issued with general rules to regulate royal titles after divorce. Diana lost the style "Her Royal Highness" and instead was styled Diana, Princess of Wales. As the mother of the prince expected to one day ascend to the throne, she continued to be regarded as a member of the royal family and was accorded the same precedence she enjoyed during her marriage. The Queen reportedly wanted to let Diana continue to use the style of Royal Highness after her divorce, but Charles had insisted on removing it. Prince William was reported to have reassured his mother: "Don't worry, Mummy, I will give it back to you one day when I am King." Almost a year before, according to Tina Brown, Prince Philip had warned Diana: "If you don't behave, my girl, we'll take your title away." She is said to have replied: "My title is a lot older than yours, Philip." Princess of Wales Following her engagement to Prince Charles, Diana made her first official public appearance in March 1981