Under her Croatian family name Radmilovic, Kate began her career in opera and operetta following a training at the Royal Northern College of Music and Zurich International Opera Studio, where she subsequently took on house repertoire contracts in Germany and Switzerland as a leading lyric soprano. Winning the Public Performance Prize at the Robert Stolz Operetta competition in Hamburg, in 2008 she returned to the UK to play Carlotta in The Phantom Of The Opera at Her Majesty’s Theatre.
Other theatre includes: Wizard in The Wizard Of Oz (Selladoor Productions); Lottie Child in Crazy For You, Frau Schmidt in The Sound Of Music (UK tours); Mrs Zero in Adding Machine (Finborough Theatre); Mrs O'Brien and u/s Parthy in Showboat (Sheffield Crucible & New London Theatre); Madame Barbier in The Braille Legacy (Charing Cross Theatre); Gemma in Jackie The Musical (Gardyne Theatre, Dundee); Rita Marbury in Ace Of Clubs (Union Theatre); Mirele in Soviet Zion (Lost Theatre); Dinah in Trouble In Tahiti (Pariserhof Wiesbaden).
Opera includes: Koenigin der Nacht in The Magic Flute (Eutin Festival/St Gallen Theatre); Minette in The English Cat (Deutsche Radio/Maestro Lothar Koenigs); Lady Billows in Albert Herring (Dortmund); Mimi and Musetta in La Bohème, Tatijana in Eugene Onegin, Agathe in Der Freischütz, Donna Elvira in Don Giovanni, Susanna in Figaro (Osnabrueck State Opera House); Violetta in La Traviata, Madame Butterfly (Heidelberg); Frau Fluth in The Merry Wives Of Windsor (Weimer). Operetta includes: Hanna Glawari in The Merry Widow, Rosalinde in Die Fledermaus, Lisa in Land Des Laechelns (Osnabrück); Sylva Varescu in Kalmanns Czardas Fuerstin (St Gallen Opernhaus).