Guest Stars Emma Fielding as Nicolette Angela Wynter as Toussaint Archie Madekwe as Courfeyrac Natalie Simpson as Sister Simplice Turlough Convery as Grantaire Reece Yates as Gavroche Thénardier Anna Calder-Marshall as Madame Rully Josef Altin as Claquesous Lorcan Cranitch as Chief Inspector / Prefect of Police Alex Jarrett as Azelma Thénardier Jumayn Hunter as Montparnasse Isis Hainsworth as Marie Claire Tsion Habte as Germaine Rachel Cuff as Stern Nun Caroline Donnelly as Dressmaker Judith Williquet as Faux-Cosette