Mulcaire, who was jailed in 2007 after pleading guilty to hacking the phones of members of the royal household for the News of the World, has been forced into making the disclosure following legal action by the comedian and actor
Steve Coogan.
In February, Coogan's lawyers argued in court that if it were proved that the News of the World had instructed Mulcaire to hack into the phones of the six public figures, it would show that phone hacking was taking place at an industrial scale.
Mulcaire must now name names in relation to MacPherson, Hughes and four others – the celebrity PR Max Clifford; the football agent Sky Andrew; Jo Armstrong, a legal adviser to the Professional Footballers Association; and Gordon Taylor, the former head of the PFA. At his trial in 2006 Muclaire also admitted hacking the phones of
five of the six names in Coogan's court order.