Guest Stars Arnas Fedaravicius as Sihtric Ewan Mitchell as Osferth Adrian Schiller as Aethelhelm Adrian Bouchet as Steapa Amelia Clarkson as Aelflaed Finn Elliot as Young Uhtred Tygo Gernandt as Jackdaw Joseph Millson as Alferic Ossian Perret as Wihtgar Debbie Chazen as Sable Anthony Cozens as Aidan Gabriel Harland as Young Cnut Tristan Harland as Esgar Oscar Skagerberg as Bjorgulf Antal Leisen as Creoda James Craze as Wessex Messenger