Guest Stars John Kavanagh as The Seer Ivan Kaye as King Aelle of Northumbria Nathan O'Toole as Bjorn Lothbrok David Pearse as Svein Co Starring Maude Hirst as Helga Jefferson Hall as Torstein Tadhg Murphy as Arne Elinor Crawley as Thyri Haraldson Ruby O'Leary as Gyda Lothbrok Diarmaid Murtagh as Leif Peter Gaynor as Lord Edgar Trevor Cooper as Earl Bjarni Jonathon Kemp as Wigea Angus MacInnes as Tostig Dez McMahon as Haraldson Kinsman Michael Liebmann as Saxon Messenger Roanna Cochrane as Slave Girl Gavan Duffy as Housecarl 1