Britannia, Sky Atlantic big-budget drama about the Roman invasion of Britain, was the channel’s best-performing original show since Fortitude opened in January 2015.
The programme’s two airings delivered a combined total audience of 540,000, according to Screen’s sister publication Broadcast.
Fortitude scored 724,000 viewers when it premiered. Britannia pushed past recent Sky Atlantic drama launches Riviera (395,000) and Tin Star (340,000).
Britannia is the first TV drama from Vertigo Films (Bronson), made in conjunction with Sam Mendes’ Neal Street Productions (Jarhead, Revolutionary Road).
The show was created by Jez Butterworth, whose credits include Spectre and Edge Of Tomorrow, and the acclaimed plays Jerusalem and The Ferryman. The nine-part series stars Kelly Reilly, David Morrissey, Mackenzie Crook, Zoë Wanamaker, and Ian McDiarmid.