By Alice Cunningham, Harriet Heywood, BBC News, Northamptonshire
The parade started at Cinch Stadium – but fans were out on the streets long before to get the best view.
Kerry and her family found a spot right in front of the Guildhall and even brought chairs to ensure they could see the team arrive.
“We are festival-goers, so we have come prepared with our chairs because we know a lot about waiting at the barriers,” she said.
Stephen Stevenson was another fan out early with his family and he managed to see Saints’ previous title win in 2014.
“I was there when we won 10 years ago and watching them win again… I sobbed like a baby,” he said.
It was not just people out and about early – the dogs of Northampton were kitted out in Saints merchandise.
Ivy and another dog were pictured enjoying the celebrations.
As the parade got closer to the Guildhall, the fans were out in their thousands with little to no space left.
Cheers could be heard as the buses came into view, with choruses of Queen’s rock classic We Are The Champions starting to break out from the fans.
At 14:30 the team stepped out in front of the crowds on a stage at the Guildhall to lift the Premiership trophy before giving several interviews.
It was an emotional moment for many of the players, including several who are leaving the team.
Flanker Lewis Ludlam, who will be heading to France next season, described the win as “a fairytale”.
“We’ve dreamt of this for a long time now… to finally get it across the line is a fairytale,” he added.
Similarly, lock Alex Moon, who is also moving to France, said it was “everything I could have hoped it could be”.
After mingling in the crowds and signing autographs, the players were back on the bus by about 15:40.
Even once the bus had departed the chants continued as fans attempted to keep the moment alive, unwilling to let it end.
Council workers were then on the streets by 16:00 helping to clear up after the event.
Fans now have to wait until September for Premiership rugby to start again.
You can catch up on the parade as it happened here or listen back to BBC Radio Northampton’s coverage on BBC Sounds here.
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