The Saints are through to the European Rugby Champions Cup quarter finals, where they will face a trip to Saracens.
Saints’ bonus point win at Parc y Scarlets combined with the results elsewhere on Sunday to ensure qualification for the knockout stages for a second successive season.
As the eighth qualifiers the Saints have been sent to Saracens, whose win over Toulouse on Saturday confirmed their place as top seeds.
The game will be played on the weekend of April 8-10, with further details to be confirmed later in the week. It is one of two all-Aviva Premiership ties, with Wasps hosting Exeter, whose win over the Ospreys both confirmed Saints’ progression and their own place in the knockouts for the first time.
QUARTER FINALS (all to be played on the weekend of April 8-10)
QF1 - Saracens v Saints
QF2 - Wasps v Exeter
QF3 - Leicester v Stade Francais
QF4 - Racing-92 v Toulon
The semi-finals have also been confirmed, with the winner of Saracens v Saints taking on whoever comes out on top between Wasps and Exeter.
SEMI-FINALS (April 22-24)
Winner QF1 v Winner QF2
Winner QF3 v Winner QF4