The second part of the mini-series, which focuses on notorious criminals the Kray Twins, averaged 5.07m (20.3%) for ITV1 from 9pm, down 350k week-on-week. An additional 225k (0.9%) watched the programme on ITV1 HD.
Whitechapel's combined audience was just outperformed by Spooks in the 9pm hour, after the espionage drama brought in 5.34m (21.3%) on BBC One, up 120k week-on-week.
The One Show appealed to 4.59m (21.1%) on BBC One from 7pm, before Inside Out grabbed 3.81m (16.5%). Panorama then mustered 2.74m (10.9%) on the channel from 8.30pm.
Earlier on ITV1, nature series Wild Britain With Ray Mears pulled in 3.58m (14.2%) from 8pm and 187k (0.7%) on ITV1 HD.
Channel 4's Dispatches: How The Rich Beat The Taxman educated 1.15m (4.5%) in the 8pm hour and 97k (0.4%) on Channel 4 +1. The programme was followed by Titanic: The Mission, which entertained 1.04m (4.2%) and 115k (0.6%) on timeshift.
Jamie's American Food Revolution was watched by 1.01m (5.5%) on Channel 4 from 10pm, while 76k (0.8%) tuned in an hour later.
Over on BBC Two, Michael Wood's Story Of England had 1.2m (5.3%) in the 7pm hour, before University Challenge and Masterchef: The Professionals secured respective audiences of 3.15m (12.5%) and 3.14m (12.5%) from 8pm.
Horizon: Is Seeing Believing? fetched 2.4m (9.6%) on BBC Two in the 9pm hour and 119k (0.5%) BBC HD. Genius With Dave Gorman then amused 1.22m (5.9%).
On Five, How Do They Do It? attracted 735k (3.2%) from 7.30pm, before The Gadget Show averaged 1.19m (4.7%) in the 8pm hour.
Rory And Paddy's Even Greater British Adventure mustered 1.24m (5%) on Five in the 9pm hour. It was followed by a screening of Tightrope, which took 664k (5.4%).
Overall, ITV1 won primetime with 23.6% (HD: 1%) against BBC One's 21%. BBC Two came in third with 8.5%, followed by Channel 4 with 4.3% (+1: 0.5%) and Five with 4%.
Elsewhere, The Inbetweeners reached a series high of 2.62m (12.9%) on E4 from 10pm, while a further 343k (3.3%) watched the comedy on E4 +1.
A History Of Horror With Mark Gatiss continued to 548k (2.2%) on BBC Four in the 9pm hour.
On CBBC, a new episode of The Sarah Jane Adventures grabbed 656k (4.5%) from 5.15pm.
BARB ratings data supplied by Attentional