Both Mr Blunkett and Mrs Quinn are known to have been consulting lawyers for several weeks. The Home Secretary has hired top London law firm Bindman & Partners, whose senior solicitors include Katherine Gieve, wife of Mr Blunkett's permanent secretary John Gieve. Magazine publisher Mrs Quinn, who is understood to be listed on court papers under her previous married name of Fortier, is being advised by Mishcon De Reya, best-known as Princess Diana's divorce lawyers.