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 Greg Walker 2 guest appearances Caitlin 2 guest appearances Bridget Wallace 2 guest appearances Niall Wallace 2 guest appearances Young Niall Wallace 2 guest appearances DS MacNeil 2 guest appearances Steve Boyd 2 guest appearances Gloria 2 guest appearances Jerome Nelson 2 guest appearances Sophie Dalglish 2 guest appearances Sara O'Keefe 2 guest appearances DS Jason Ross 2 guest appearances PC Bathurst 2 guest appearances Stella Nelson 2 guest appearances DI Simon Laing 2 guest appearances Peter Wallace 2 guest appearances Fawzia 2 guest appearances Darek 2 guest appearances Sean Nugent 2 guest appearances Karim 2 guest appearances ⇤ « 4 5 6 7 8 9 10 11 12 13 » ⇥