Franco Bourne led the way as the Pirelli National Junior Superstock action kicked-off day one at Donington Park, leading Aaron Silvester with a best lap of 1m:10.722s around the National circuit.
Third quickest was Louis Valleley, just ahead of Owen Jenner as Jack Bednarek rounded out the top five.
Pirelli National Junior Superstock with MotoNovo Finance, Free Practice One:
1. Franco Bourne, Marvel HCL Motorsport
2. Aaron Silvester, A&J Racing +0.073s
3. Louis Valleley, Team Val-Tech Racing/Mortimer Racing +0.460s
4. Owen Jenner, Jenner Racing +0.489s
5. Jack Bednarek, CF Motorsport +0.506s