Gloucester had the better of the opening exchanges with tries from Max Llewellyn and Will Joseph opening up a 14 point lead, before Tom Pearson responded for Saints.

Curtis Langdon's effort on the verge of half-time brought the scores level, but it took until the final quarter for Saints to really seize control of the game.

George Hendy added a third try after a pinpoint pass from Anthony Belleau before Rory Hutchinson's late score put the game beyond the visitors, but England fans will be concerned after Northampton scrum-half Alex Mitchell was forced off with an unknown injury during the first half.

Victory moves Northampton up to third in the table, level on points with Gloucester in second as the Prem takes a four-week break.

In the misty conditions, it was the visitors who struck first.

Attacking in the Saints' 22, the returning Seb Atkinson released George Barton who offloaded to Llewellyn to dot down over the whitewash.

Saints then suffered another blow as Mitchell was forced off with an unknown injury on the eve of England's Nations Championship campaign.

After being repeatedly repelled by Northampton's defence, Gloucester then scored again. Following a well executed set-piece move, Hendy was unable to contain Joseph, who stumbled over the line to add the Cherry and Whites' second.

Northampton desperately needed some attacking emphasis and finally found it through Pearson.

With Gloucester penalised in their own half, Saints kicked for the corner. The resulting rolling maul had seemingly come to a halt, but Langdon managed to pop the ball up to the flanker who crashed over at short range.

Saints then claimed a second in similar circumstances right before half-time. Another driving line-out was initially kept out by Gloucester before it splintered, allowing Langdon to dive over.

Missing the impetus of injured fly-half Fin Smith, Saints continued to struggle in attack after the restart with another promising opportunity snuffed out by a Joseph interception.

With both defences on top, the game needed a moment of real quality and eventually received it from Belleau.

With the Gloucester defence narrow, the fly-half played a perfect looped pass to Hendy who dived over in the corner to give Saints the lead.

Hutchinson then added a bonus point fourth, the replacement centre exploiting Gloucester's press defence with a quick step to force his way over the line.

Gloucester continued pressing until the end but were unable to breach the Saints defence, recording only their second loss of the season.

Replacements: Smith, Fischetti, Neculai, Van Der Mescht, Lockett, Pollock, Weimann, Hutchinson.

Replacements: Lake, Bleuler, C Knight, Trenholm, Morgan, Ludlow, Robson, Redshaw.

Referee: Sara Cox.