Guest Stars Edward Hogg as Daimler Alex Ferns as Vic Collins Ian Whyte as Plague Doctor Nell Hudson as Louise Jonjo O'Neill as Mycroft Holmes Charles Armstrong as Mr Bannister Ansu Kabia as John Cooper Emma Cunniffe as Laura Machin Patrice Naiambana as Duke of Winchester Lucy Russell as Duchess Harriet Turnbull as Carla Machin Brooke Carter as Georgina George Potts as Compere Muna Otaru as Maggie Cooper Keira Chansa as Lucy Anouk Christiansen as Young Jessie Evie Lew-Davies as Young Bea Ameen Mustapha as William Cooper
