Jamie Blackley (represented by United Agents), who got his start in the London stage production of Spring Awakening, is set to star in the 300 prequel, provisionally titled 300: Battle of Artemisia.
300 was the hugely successful adaptation of the cult graphic novel series by Frank Miller and Lynn Varley set in ancient Greece, featuring an epic array of Persians, Spartans and Greeks.
He will play Calisto, a 16 year old whose desire to become the heroic man/soldier his father was, leads him to become the leader of a small band of soldiers. The cast also includes Eva Green as Artemisia.
Toby Regbo as John, in the Andrew Douglas-directed uwantme2killhim?, a film about a young man entangled in an unhealthy internet relationship that results in him committing a crime.
He will also be seen this year as Drainpipe in punk comedy Vinyl, which is currently doing the rounds at film festivals.
Filming on 300: Battle of Artemisia is due to start in July.