Paapa Essiedu George Actor Anjli Mohindra Archie Actor Rudi Dharmalingam Shiv Actor Caroline Quentin Wes Actor Tom Burke Rebrov Actor Charly Clive Sarah Actor Elaine Tan Zhang Actor Salóme Gunnarsdóttir Greta Actor Lukas Loughran The Dane Actor Brian Gleeson Ross Actor Vinette Robinson Janet Actor Sam Troughton Dr Samson Actor Zoe Telford Dr Kitty Gray Actor Colin Salmon Robin Lerner Actor Royce Pierreson Bryson Actor Safia Oakley-Green Becky Actor Bradley John Reggie Actor Rosie Jones Dr Morgenstein Actor Dan Li Dr Li Actor Steven H. Li Dr Feng Actor Priya-Rose Brookwell Young Becky Actor Lorne MacFadyen Cormac Actor Carl Tibbetts Director Joe Barton Writer, Executive Producer Johnny Capps Executive Producer Marco Kreuzpaintner Executive Producer Julian Murphy Executive Producer Benjamin Greenacre Producer