Oliver Coleman ... Henry Portmore 1 episode, 2014 Joanna Roth ... Prudence Maddox 1 episode, 2016 Lewis Rainer ... Albert Potter 1 episode, 2016 Eleanor Williams ... Ingrid Hjort 1 episode, 2016 Ella Hunt ... Emma Carr 1 episode, 2017 Ciara Charteris Nunn ... Nurse ...