Rhys Stephenson came out on top after two practice sessions to top the timesheets at the end of the opening day.
Stephenson’s best lap of 1min 42.312secs was enough to take him to the top of the combined timesheets of two groups, as he led Ferre Fleerackers by 0.200s.
Fenton Seabright was third fastest, with Harrison Dessoy fourth and Ash Barnes fifth.
Pirelli National Sportbike Championship, Combined practice:
1. Rhys Stephenson (Rocket Racing) 1min 42.312s
2. Ferre Fleerackers (B.art Racing) +0.200
3. Fenton Seabright (FHS/RD Racing) +0.368s
4. Harrison Dessoy (PHR Performance Triumph) +0.465s
5. Ash Barnes +0.480s (Raceways Yamaha) +0.480s