Richard Cooper picked up where he left off at Donington five days ago as he led former team-mate Barry Burrell by 1.432secs in free practice with a best lap of 2min 01.019s.
Behind, it was much closer, with Christian Smith finishing third, 0.295s adrift of Burrell, with Thomas Strudwick fourth and Nikki Coates fifth.
ABK Beer 0% BMW Motorrad F900 R Cup, free practice:
1. Richard Cooper (FHO Racing BMW Motorrad) 2min 01.019s
2. Barry Burrell (Mallory Performance Racing) +1.432s
3. Christian Smith (SCH Motoprep/ Smith Twins Racing) +1.727s
4. Thomas Strudwick (Art of Racing) +1.744s
5. Nikki Coates (Ernie Coates Track Days/AOR Racing) +1.783s