Heseltine's letter to Horne, on Thatcher's request, was referred to the Solicitor-General, Patrick Mayhew. Mayhew sent a reply to Heseltine, noting "material inaccuracies" in Heseltine's letter, and asking Heseltine to write to Horne again, correcting them. Mayhew's letter of rebuke to Heseltine—marked "Confidential"—reached Heseltine at lunchtime on Monday 6 January and was immediately and selectively leaked to the Press Association by Colette Bowe, chief information officer at the Department of Trade and Industry, at Brittan's request. There was controversy over whose orders Colette Bowe was following. The Attorney-General, Sir Michael Havers, took a stern view of leaks, especially of confidential legal advice, and threatened to resign if an official inquiry was not set up to look into it. Thatcher agreed to do this.