Reigning champion Ben Currie took the Feature Race win at Oulton Park as he beat Jack Kennedy by 1.614secs.
In a dramatic 16-lap scrap, polesitter Luke Stapleford – who had been consistently running at the front all weekend – crashed out on the opening lap, leaving Currie and Kennedy to battle it out for victory.
The pair scrapped during the early laps, the lead swapping between thm but eventually Currie found his way through and managed to build enough of a gap to take the win.
Behind, Eugene McManus made up for a difficult start to the weekend as he crossed the in a solid third place. Rhys Irwin eventually took fourth after a close battle with team-mate Harry Truelove.
In GP2, it was Owen Jenner who again stole the win, beating his Kramer Racing team-mate Jack Nixon, as Lucca Allen was third.
Adon Davie was the first Cup rider home, as he led Cameron Hall with Tom Tunstall third.
Quattro Group British Supersport, GP2 and HEL Supersport Cup, Feature race result:
1. Ben Currie (Oxford Products Racing Ducati)
2. Jack Kennedy (Honda Racing UK) +1.614s
3. Eugene McManus (ROKiT Haslam Racing) +4.984s
4. Rhys Irwin (Astro-JJR Suzuki) +7.602s
5. Harry Truelove (Astro-JJR Suzuki) +7.716s
Championship positions:
1. Jack Kennedy 78
2. Ben Currie 77
3. Luke Stapleford 72
4. Harry Truelove 60
5. Brad Perie 56