BARB stands for Broadcasters' Audience Research Board and tracks TV viewing in the UK. The top 4 crime drama programs and their viewers are: 1) New Tricks on BBC1 with 8.26 million viewers, targeting older audiences familiar with the actors. 2) Hunted on BBC1 with 4.50 million viewers, aimed at young and older adults who watch TV in the evenings. 3) Homeland on Channel 4 with 2.74 million viewers, targeting older audiences as it airs in the evenings on a non-family channel. 4) CSI: Miami on Channel 5 with 1.14 million viewers, aimed at middle-aged people or teenagers who watch in the evenings.