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 Emma Cunniffe as Laura Machin Ansu Kabia as John Cooper Lucy Russell as Duchess Muna Otaru as Maggie Cooper Evie Lew-Davies as Young Bea Patrice Naiambana as Duke of Winchester George Potts as Compere Harriet Turnbull as Carla Machin Brooke Carter as Georgina Keira Chansa as Lucy Anouk Christiansen as Young Jessie Ameen Mustapha as William Cooper
