Project. A meeting of the BBC governors was held on 13 November 1986, chaired by Marmaduke Hussey. Hussey had been recommended as chairman of the BBC Board of Governors by Conservative government ministers. Opposition to Campbell from governors at the meeting came from Daphne Park, the former MI6 operative, who said that Campbell was a "destroyer" who the BBC should never have employed, and the former diplomat Curtis Keeble. Hussey subsequently expressed the negative views of the governors to Milne after the meeting. Milne met the Director of the Government Communications Headquarters, Peter Marychurch, on 5 December 1986, on the same day that Alan Protheroe, the Assistant Director-General of the BBC, had written to Milne at his home, saying that the Zircon episode should not be transmitted. Protheroe was responsible for supervising journalism at the BBC, and was the BBC's member on the D-Notice Committee. Protheroe believed that the Zircon episode would damage national security after speaking to the Ministry of Defence. Initial cuts of all six programmes in the series were then viewed by Milne, who later showed the series to the governors. The governors subsequently felt that, barring a few changes, the series would be suitable for broadcast, except for the Zircon episode. However, not all governors were as opposed to the episode as Protheroe was. The governors held two further meeting before Christmas 1986, at which Milne was "hounded unpleasantly over Secret Society". Milne finally made a decision not to broadcast the Zircon episode during the Christmas holiday. Revelation of issue and government action The Zircon affair was publicly revealed by The Observer on 18 January 1987, with the headline "BBC Gag on £500m Defence secret". An injunction was obtained by the Attorney General on January 21 restraining Campbell from talking or writing about the contents of the episode. On 22 January, Campbell published an article in the New Statesman against which the government issued an injunction. Campbell's article was sourced to a former employee of GCHQ and four unnamed defence officials, and the Attorney General instructed police from Special Branch to find their identities to establish whether the Official Secrets Act had been breached. Under the authority of a warrant under section 9 of the Official Secrets Act 1911, Special Branch raided Campbell's London home, those of his researchers Jolyon Jenkins and Patrick Forbes, and the New Statesmans offices. On 31 January 1987, Strathclyde Police conducted