Jack Kennedy topped the timesheets at the end of day one at Oulton Park after once again beating Bradley Perie to the quickest time of the day with a 1m:37.446 to put him 0.811s clear.
Ashcourt Racing’s Lee Johnston ended the day with the third best time, just ahead of Harry Truelove as the returning Luke Stapleford was fifth.
Jack Scott took day one bragging rights in the GP2 class, just ahead of Cameron Fraser and Harvey Claridge.
Quattro Group British Supersport Championship, Oulton Park, combined practice:
1. Jack Kennedy (Mar-Train Racing)
2. Bradley Perie (Appleyard Macadam Racing) +0.811s
3. Lee Johnston (Ashcourt Racing) +1.147s
4. Harry Truelove (Appleyard Macadam Racing) +1.440s
5. Luke Stapleford (Gearlink Kawasaki) +1.596s