Guest Stars Daniel Anthony as Clyde Langer Alexander Armstrong as Mr Smith Tommy Knight as Luke Smith Anjli Mohindra as Rani Chandra John Leeson voices K-9 Miriam Margolyes voices Leef Blathereen Simon Callow voices Tree Blathereen Paul Kasey as Leef Blathereen Ruari Mears as Tree Blathereen Sarah Paul as Miss Jerome Edward Judge as Dave Jimmy Vee as Chris Slitheen Calvin Dean as Chris