Keeley Hawes Louisa Durrell Actor, Executive Producer Josh O'Connor Larry Durrell Actor Milo Parker Gerry Durrell Actor Callum Woodhouse Leslie Durrell Actor Daisy Waterstone Margo Durrell Actor Alexis Georgoulis Spiros Hakaiopolous Actor Yorgos Karamihos Dr. Theo Stephanides Actor James Cosmo Captain Creech Actor Miles Jupp Basil Actor Felicity Montagu Prue Actor Jeff Rawle Geoffrey Actor Anna Savva Lugaretzia Actor Marina Aslanoglou Dimitra Actor Gemma Page Mrs Kemble Actor Madeline Holliday Maud Actor Marios Kotetsis Young Boy Actor Alexandros Zouridakis Argos the Postman Actor Simon Nye Writer, Executive Producer Lee Morris Executive Producer Christopher Hall Producer Sally Woodward Gentle Executive Producer Roger Goldby Director Ruth Barrett Original Music Jon Wygens Original Music