Harrison Mackay topped the FP1 timesheets as action began at Snetterton this morning.
The Armada SC31 Racing rider pipped Ferre Fleerackers by 0.012secs with a hot lap of 1min 57.456s, as Alfie Davidson ended the session third.
Charlie Atkins was fourth quickest at the flag, with Taylor Rose fifth.
Pirelli British Sportbike Championship, FP1 result:
1. Harrison Mackay (Armada SC13 Racing) 1min 57.456s
2. Ferre Fleerackers (B.art Racing Team) +0.012s
3. Alfie Davidson (Aprilia IN Competition Racing) +0.363s
4. Charlie Atkins (Symcirrus Motorsport) +1.083s
5. Taylor Rose (Timbosite Racing) +1.137s