Colin Firth as Aurelius

Ben Kingsley as Ambrosinus

Aishwarya Rai Bachchan as Mira

Peter Mullan as Odoacer

Kevin McKidd as Wulfila

John Hannah as Nestor

Iain Glen as Orestes

Thomas Brodie-Sangster as Romulus Augustus

Rupert Friend as Demetrius

Nonso Anozie as Batiatus

Owen Teale as Vatrenus

Alexander Siddig as Theodorus Andronikos

Robert Pugh as Kustennin

James Cosmo as Hrothgar

Harry Van Gorkum as Vortgyn

Murray McArthur as Tertius

Lee Ingleby as Germanus

Beata Ben Ammar as Flavia

Rory Finn as Young Arthur

Ferdinand Kingsley as Young Druid

Andrew Westfield as Marcallis

Alexandra Thomas-Davies as Ygraine

Robert Brazil as Scorpion Commander