Luke Stapleford drew first blood as the Supersport pack hit the track for FP1 this morning, leading Jack Kennedy by 0.350secs.
The Macadam Triumph Racing rider clocked a best lap of 1min 39.559s to take him to the top of the opening timesheets, as points leader Rhys Irwin was third quickest behind Kennedy.
Fourth fastest was Oliver Barr, who ended the session just ahead of his Binch Pro Ducati team-mate Joe Talbot who was fifth.
Quattro Group British Supersport Championship, FP1:
1. Luke Stapleford (Macadam Triumph Racing) 1min 39.559s
2. Jack Kennedy (Honda Racing UK) +0.350s
3. Rhys Irwin (Gearlink Bike Performance 15) +0.675s
4. Oliver Barr (Binch Pro Ducati) +0.690s
5. Joe Talbot (Binch Pro Ducati) +0.735s