Manu Tuilagi scored for the first time since returning from a 15-month injury lay-off but could not prevent Leicester from losing their 100 per cent Champions Cup record as the Tigers were overcome 36-21 by Stade Francais.
Northampton boss Jim Mallinder praised a "good solid game" from England captain-in-waiting Dylan Hartley after Saints edged closer to the European Champions Cup quarter-finals.
Glasgow ended a frustrating European campaign on a positive note and head coach Gregor Townsend was "delighted" with the workmanlike 22-5 victory over Racing 92 at Kilmarnock's Rugby Park.
Elliot Daly pressed his claim to starting England's RBS 6 Nations opener against Scotland with an electric try as Wasps stormed into the Champions Cup quarter-finals with a 51-10 rout of Leinster.
Ulster produced the bonus point victory they needed from their final European Champions Cup pool game against Oyonnax but must now wait on other results to secure qualification to the knockout stages as one of three best runners-up.
Despite a second-half howler from England international Owen Farrell, Saracens maintained their 100 per cent record in this season's Champions Cup with a convincing 28-17 victory over Toulouse.
The race for quarter-final places in this season's European Champions Cup reaches its conclusion this weekend with the final round of pool games across five groups.
Saracens are currently in the process of deciding whether to appeal the 10-week ban that has made Chris Ashton unavailable for the entirety of England's 2016 RBS 6 Nations campaign.
Glasgow flanker Ryan Wilson has escaped suspension after the charge that he grabbed the testicles of Northampton scrum-half Lee Dickson were dismissed.
Clermont Auvergne and Georgia international Viktor Kolelishvili has been suspended for a total of 14 weeks following an incident which saw the flanker push referee Wayne Barnes during Friday's European Rugby Champions Cup fixture against the Ospreys.
Northampton director of rugby Jim Mallinder admitted he was "pretty chuffed" after his son Harry scored the game-winning try a minute from time against Glasgow to keep Saints alive in this season's European Champions Cup.
Owen Farrell provided a timely spark of creativity as Saracens stormed into the quarter-finals of the Champions Cup with a 33-17 victory over Ulster that guarantees home advantage in the next round.
Exeter pushed Bordeaux-Begles close in France but a 34-27 defeat has left the Chiefs with a mountain to climb to progress in the European Champions Cup.