As the Roman empire crumbles, young Romulus Augustus flees the city and embarks on a perilous voyage to Britain to track down a legion of supporters.
| Actor | Role |
|---|---|
 Colin FirthAurelius | Aurelius |
 Ben KingsleyAmbrosinus | Ambrosinus |
 Aishwarya Rai BachchanMira | Mira |
 Peter MullanOdoacer | Odoacer |
 Kevin McKiddWulfila | Wulfila |
 John HannahNestor | Nestor |
 Iain GlenOrestes | Orestes |
 Thomas Brodie-SangsterRomulus Augustus | Romulus Augustus |
 Rupert FriendDemetrius | Demetrius |
 Nonso AnozieBatiatus | Batiatus |
 Owen TealeVatrenus | Vatrenus |
 Alexander SiddigTheodorus Andronikos | Theodorus Andronikos |
 Robert PughKustennin | Kustennin |
 James CosmoHrothgar | Hrothgar |
 Harry Van GorkumVortgyn | Vortgyn |
 Murray McArthurTertius | Tertius |
 Lee InglebyGermanus | Germanus |
| BBeata Ben AmmarFlavia | Flavia |
| RRory FinnYoung Arthur | Young Arthur |
 Ferdinand KingsleyYoung Druid | Young Druid |
 Andrew WestfieldMarcallis | Marcallis |
| AAlexandra Thomas-DaviesYgraine | Ygraine |
| RRobert BrazilScorpion Commander | Scorpion Commander |