For the second season in a row, they were paired with Northampton Saints, along with Toulouse from France and Glasgow from Scotland.
[1] They began the pool stage on 22 October with a narrow 9–6 defeat at home to Toulouse, a game they should have won thanks to two missed try-scoring opportunities.
[4] Another bonus-point victory at Stradey Park the following week, thanks to braces from Aisea Havili, Tal Selley and another try from Vernon Cooper, kept the Scarlets in with a chance of qualifying for the quarter-finals.
[5] That chance was extinguished when European rugby resumed in January 2005, as a last-minute try from World Cup-winning England hooker Steve Thompson gave Northampton a 22–20 win.
Although the Scarlets could finish second in their pool with victory over Toulouse the following week, their points total would not be enough to be one of the two best runners-up.