The Cardiff Blues began their Heineken Cup campaign with a bonus point 34–18 home win over Bristol, and followed this with a 13–13 away draw at Harlequins. In December, the Cardiff Blues secured a losing bonus point in their 12–6 loss against Stade Français in Paris, and subsequently won the return fixture 31–21 the following week. A 23–12 home win over Harlequins followed by a 17–0 away win at Bristol secured qualification to the quarter-final stages as the fifth seed. The Cardiff Blues subsequently lost their away quarter-final 41–17 against Toulouse on 6 April.