Guest Stars Toheeb Jimoh as Marcus Pete MacHale as Leon Ursula Holliday as Cass Stewart Anneika Rose as Natalie Milly Thomas as Sara Hoyt Anson Boon as Anton Garin T'Nia Miller as Charlie Morris Laurie Kynaston as Jonah Green Olwen Fouéré as Jane Olivia Morgan as Tia Clive Russell as Graham Ace Bhatti as Dr Adu Imani Jackman as Arian Keicha Greenidge as Surgery Staff Oaklee Pendergast as Ryan Roger Alborough as Devan Nigel Boyle as Gary Jessie Hills as Devan's Daughter Eloise Joseph as Chetna Carl McCrystal as Abel