Arnold slashed Ashley Kerry Roberts 's throat and chest in attack last year . After attack he returned to party where he said : ' I 've killed her , she 's dead ' Miss Kerry Roberts , 44 , staggered outside where neighbours phoned ambulance . Roberts was sentenced to life in prison at Chelmsford Crown Court today .
Kerry Roberts slashed Ashley Arnold 's throat and chest in attack last year . After attack he returned to party where he said : ' I 've killed her , she 's dead ' Miss Arnold , 44 , staggered outside where neighbours phoned ambulance . Roberts was sentenced to life in prison at Chelmsford Crown Court today .