Niamh Algar Dr Lucinda Edwards Actor James Purefoy Dr Leo Harris Actor Helen Behan Dr Norma Callahan Actor Jordan Kouamé Dr George Adjei Actor Tristan Sturrock Dr Mike Willett Actor Lorne MacFadyen Tom Edwards Actor Hannah Walters Matron Beth Relph Actor Scott Chambers Dr Oscar Beattie Actor Priyanka Patel Dr Ramya Morgan Actor Adei Bundy Kathy Miller Actor Sherelle Armstrong Edith Owusu Actor Kate England Amelia Wyatt Actor Duggal Ram Surgeon Actor Katie Bellwood Jane Actor Rebecca-Clare Evans Carly's Mother Actor Simon Naylor Security Guard Actor Shaun Fagan The Gunman Actor Daniel Waterhouse Paramedic 1 Actor Liberty Miller Abi Edwards Actor Michelle Parker Nurse Alison Actor Grace Ofori-Attah Writer, Executive Producer Philip Barantini Director, Executive Producer Simon Heath Executive Producer Sophie Reynolds Producer