Luke Mossey claimed bragging rights in the opening Superstock practice session as he held off Ilya Mikhalchik with a hot lap of 1min 49.391s.
Mikhalchik was second, just 0.127secs behind, with David Allingham third, Josh Owens fourth and Tom Ward fifth.
Pirelli National Superstock Championship, FP1:
1. Luke Mossey (Milenco by Padgetts Motorcycles) 1min 49.391s
2. Ilya Mikhalchik (ROKiT BMW Motorrad) +0.127s
3. David Allingham (SMS/Nicholl Oil BMW) +0.612s
4. Josh Owens (SAF Holland Honda) +0.816s
5. Tom Ward (Armada Racing Honda) +0.831s