| Alex Høgh Andersen | Ivar |
| Marco Ilsø | Hvitserk |
| Jordan Patrick Smith | Ubbe |
| Georgia Hirst | Torvi |
| Eric Johnson | Erik |
| Peter Franzén | King Harald Finehair |
| Ray Stevenson | Othere |
| Ferdia Walsh-Peelo | King Alfred |
| Lucy Martin | Ingrid |
| Roisin Murphy | Elsewith
(as Róisín Murphy) |
| Noella Brennan | Gudrid |
| Ian Lloyd Anderson | Naad |
| Ian Brooker | Bishop |
| Desmond Eastwood | Messenger |
| Bryan Larkin | Wiglaf |
| Jordan Coombes | Shield Maiden
(uncredited) |
| Lucy Johnson | Shield Maiden
(uncredited) |
| Jinny Lofthouse | Shield Maiden
(uncredited) |
| Alex Payne | Viking
(uncredited) |
| Mark Quigley | Wessex Noble
(uncredited) |