They did so by claiming 12 wins from 18 matches while picking up a total of 12 bonus points along the way.
That was enough to keep them ahead of second-placed Bath by virtue of having claimed one more victory than Johann van Graan’s men.
And now Saints will head into the Premiership play-off semi-final against Saracens at a sold-out cinch Stadium at Franklin’s Gardens.
How Phil Dowson’s men would love to add two more wins to their tally this season as they seek to claim some long-awaited major silverware.
But, for now, let’s take a look back on the games they have already prevailed in during this Premiership adventure...
9. Saints 38 Newcastle Falcons 13
Tom James scored for Saints against Newcastle on January 27 Photo: Marc Atkins
10. Saints 41 Saracens 30
Saints secured an impressive win against Saracens at the Gardens on March 29 Photo: David Rogers
11. Saints 40 Leicester Tigers 17
Saints claimed derby-day bragging rights against Leicester on April 20 Photo: David Rogers
12. Saints 90 Gloucester 0
Manny Iyogun scored his first Saints try in the huge win against Gloucester on May 11 Photo: David Rogers