Guest Stars Salóme R. Gunnarsdóttir as Greta Lukas Loughran as The Dane Safia Oakley-Green as Becky Daniels Dan Li as Dr. Li Priya Rose Brookwell as Young Becky Amanda Drew as Dr. Harrison Abe Jarman as Sam Charlotte Lucas as Bernadette Winters Waleed Akhtar as Sanjay Reddy Vinny Dhillon as Shiv's Mum Jonny Burman as Army Officer