EXCLUSIVE: Kelly Reilly is set to board event TV series Britannia, which charts the Roman invasion of what would become Great Britain in 43 A.D. The series is now set up at Sky. Reilly plays the key character of Kerra.

Britannia is being pitched as a high-end earthy swords and sandals show that can appeal to audiences. Kari Skogland (Vikings; House Of Cards) is directing. Star Wars‘ Rick McCallum is producing. Sky’s Anne Mensah exec produces alongside One Three Television’s Anne Thomopoulos, Vertigo’s James Richardson and Terry Cafolla. Filming starts in May.

Reilly has the Idris Elba-Richard Madden actioner Bastille Day coming out later this month. The Studio Canal pic opens in the UK on April 22; focus is releasing domestically. The pic, directed by James Watkins, follows a young artist and former CIA agent who embark on an anti-terrorist mission in France.

Reilly is repped by Troika Talent and ICM Partners.