Lowry was the man on the move during the early stages, climbing to a high of fifth position having dispersed a series of rivals on the Relentless Suzuki. However, the Ulsterman's charge would falter soon afterwards as he rapidly began slipping down the order, eventually crossing the line in 19th position.
With Karl Harris enduring similar issues as he fell to what would be 11th by the chequered flag, it freed up Andrews to launch a late attack on Richards for fourth position, one that included a breathtaking manoeuvre on the outside at Church on the penultimate lap.
While Richards would get him back straight away, the pair would resume their last lap exchange from Donington Park – also for fourth -, with Andrews once again prevailing with a solid pass at Campbell as Richards' tyres visibly began to fade.
The Australian's demotion wouldn't end there though as he would also be overtaken before the end of the lap by the looming Rutter. Having made a tardy first start on the Worx Crescent Suzuki, Rutter gradually worked his way back into contention to snatch fifth from Richards on the sprint down to the final corner chicane.
It meant Richards would be forced to settle for sixth, one position ahead of team-mate Josh Brookes, who endured a somewhat lonely race in seventh place.
Just behind, John Laverty secured his best result of the season in eighth place on the Buildbase Kawasaki after resisting the race long attentions of Mason, the privateer never really recovering from an error on the opening lap when he ran wide at Club.
Julien Da Costa worked his way up the order to claim tenth at the expense of Harris, while Graeme Gowland, Jason O'Halloran, Atsushi Watanabe and Cup rider Tom Tunstall completed the points.