Guest Stars David Thewlis as John Dee Jenna Coleman as Johanna Constantine Joely Richardson as Ethel Cripps Meera Syal as Erica "Ric the Vic" Clare Higgins as Hettie Co Starring Joe Corrigall as Sam Eleanor Fanyinka as Rachel Moodie Hannah van der Westhuysen as The Princess Sam Donnelly as Armed Officer #2 Marcus Fraser as Agilieth Stephen Odubola as Kevin Brody Stevie Hutchinson as Alex Logue Nina Rose Galano as Astra Logue Olu Adaeze as Armed Officer #1 Marcus Adolphy as Cab Driver