Main Characters Dr. Nikki Alexander 171 main appearances Prof. Leo Dalton 106 main appearances Jack Hodgson 95 main appearances Dr. Harry Cunningham 94 main appearances Prof. Samantha "Sam" Ryan 60 main appearances Clarissa Mullery 59 main appearances Dr. Thomas Chamberlain 49 main appearances Trevor Stewart 24 main appearances Cara Connelly 16 main appearances Professor Gabriel Folukoya 20 main appearances Velvy Schur 20 main appearances Simone Tyler 10 main appearances Dr. Adam Yuen 4 main appearances
Recurring Guest Characters Katie Bowman 2 guest appearances Stephen Miskin 2 guest appearances Helen Ferguson 2 guest appearances Ben Morgan 2 guest appearances Carol 2 guest appearances Amy Nash 2 guest appearances Dr. Christy Nash 2 guest appearances Mark Janssen 2 guest appearances Gemma Bowman 2 guest appearances DI John Leighton 2 guest appearances Mousa Rashid 2 guest appearances David Preston 2 guest appearances Workman 2 guest appearances Adam Freedman 2 guest appearances Police Constable 2 guest appearances Isaac Dreyfus 2 guest appearances DS Anne Burchett 2 guest appearances Armed Police officer 2 guest appearances Zara Dreyfus 2 guest appearances Bazza Numan 2 guest appearances ⇤ « 2 3 4 5 6 7 8 9 10 11 » ⇥