Margaret Thatcher was adamant officials should not publicly name Sir Peter Hayman, a senior diplomat connected to a paedophile scandal, even after she had been fully briefed on his activities. The file [of formerly secret papers], compiled between October 1980 and March 1981, is made up of memos and background notes put together for Thatcher, then prime minister. In a three-page document from 17 March 1981 ... officials explain why Hayman was not prosecuted when, three years previously, police discovered he was a member of the Paedophile Information Exchange group. The memo ends: "It is the policy of the law officers that persons who have been investigated by the police but not prosecuted should not be named in the House [of Commons]". Thatcher amends this paragraph to cross out "in the House", indicating that she did not believe Hayman should be named anywhere. Thatcher's insistence on not naming Hayman appeared always unlikely to succeed. [Peter Hayman] had come to the attention of police in 1978 when ... Police raided his flat in west London and found 14 years' of journal entries detailing his fantasies, many involving children. The director of public prosecutions decided that Hayman and his co-correspondents should not be charged. The magazine Private Eye ran a story detailing what had happened and naming him. The file shows that prior to the Private Eye article, in October 1980, Thatcher and her officials had no idea that police had even investigated Hayman.