From the BARB official UK ratings summary for the week ending 17 October 2004, Atlantis and Stargate SG-1 both performed strongly. Atlantis debuted with 1.28 million viewers, while SG-1 improved on its rating of 940,000 viewers from the week before to 1.19 million viewers.
1 STARGATE ATLANTIS (Tue 21:00) 1.28
2 STARGATE SG-1 (Tue 20:00) 1.19