Guest Stars Philip Arditti as Dr Metin Ozkul Bhav Joshi as Dr Ant Vyas Henry Meredith as Tommy Henderson Naomi Denny as Chantelle Gregory Christopher Hatherall as Nick Henderson Eleanore-Beatriz Viveiros as Robyn Henderson Donna Banya as Emma Mutamba Irungu Lucy Montgomery as Clare Boxall Jodie McNee as Jules Jarman Mark Dexter as Dr Mike Prentiss David Ganly as Richard Speller Cat McKeever as Tracey Elsom Tammy Heath as Alison Frampton Stephanie Street as Dr Joanne Alba Norma Dixit as Ant's Mum Freddie Stabb as Ellie Bridges Adnan Rashed as Khalid Emily Perkins as Ellie's Little Girl Maeve Elmore as Covid Denier Molly Mercurio as Runner Edwin Nwachukwu Jr. as Nigel Adeyemi Lavrentii Tarasevych as Taxi Driver Cameron Tharma as Lockdown Sceptic Matilda Perkins as Ellie's Little Girl Harry Long as Simon Bridges Tony Brown as Man on Video Sarah Malin as Mrs Smith Colin Murray voices Radio Host Daniel Tuite as Mr Sam Hunton Michael Garner as Mr Rodgers