The first episode of the new 'Grand Designs' series, which celebrates its 10th birthday this year, saw presenter Kevin McCloud guiding a couple through their plan to restore a 200-year-old industrial building.
It pulled in 4.1m viewers and a 17.4% share of the 9-10pm audience. Including Channel 4+1 figures it reached 4.4m viewers.
The third and final part of BBC One documentary series 'The Secret Life of Elephants', which saw the team tranquilise a four-ton female elephant in order to examine her calf, pulled in 4.1m viewers and a 17.3% share of the 9-10pm audience.
ITV1's detective drama 'Taggart', starring Alex Norton as DCI Matt Burke, drew 3.6m viewers and a 14.9% share of the same audience.
The final part of BBC Two's documentary 'The City Uncovered with Evan Davis', which saw the Radio 4 'Today' presenter examining the roots of the current economic crisis, netted 1.4m viewers and a 5.9% share of the 9-10pm audience.
It beat Five's airing of action thriller 'The Hard Corps', starring Jean-Claude Van Damme, which attracted 1m viewers and a 5.4% share of the 9pm to 11.15pm audience.