Feeds
The archive footage show, the first in a four-part miniseries, drew 653,000 (3.6%) between 9pm and 10pm. The channel's previous top-rated new factual programme was Inside The Medieval Mind, which attracted 644,000 on overnight figures, though this rose to 699,000 in later consolidated ratings.
The closest digital-only competition came from BBC Three, where 521,000 watched movie Tombstone between 9pm and 11pm, and E4 interested 313,000 with Ghost Whisperer over an hour from 9.05pm.
The Thirties In Colour may have benefited from a lack of strong competition on the terrestrial channels in the 9pm hour.
The best performer was BBC One reality documentary Cars, Cops and Criminals, which drew 5.1m (24.4%).
ITV1 only interested 2.9m (13.8%) with Marco's Great British Feast, down 200,000 on last week's opener.
The penultimate Tribal Wives drew 2.2m (10.7%) for BBC Two in the 9pm hour, while Personal Services Required, Channel 4's latest lifestyle reality show, interested 1.6m - 100,000 fewer than last week.
Five aired a rerun of list show The Greatest Ever Disaster Movies between 8.45pm and 11.30pm, interesting 834,000 (5.1%).
