Long-serving cast members included Lenore Smith (Kate Wellings, 164 episodes), Robert Grubb (Dr Geoff Standish, 148 episodes), Maurie Fields (Vic Buckley (139 episodes), Val Jellay (Nancy Buckley, 97 episodes), George Kapiniaris (Dimitrios 'D.J.' Lonniadis, 93 episodes), Peter O'Brien (Sam Patterson, 75 episodes), Rebecca Gibney (Emma Plimpton, 73 episodes), Terry Gill (Sergeant Jack Carruthers, 62 episodes), Andrew McFarlane (Dr Tom Callaghan, 53 episodes), Pat Evison (Violet Carnegie, 52 episodes), Liz Burch (Dr Chris Randall, 49 episodes), Bruce Barry (George Baxter, 40 episodes), Vikki Blanche (Paula Patterson, 36 episodes), Mark Neal (Marty Jarvis, 35 episodes), Brett Climo (Dr David Ratcliffe, 32 episodes).