Luke Stapleford flew to the top of the combined leaderboards with a best lap of 1min 31.714secs in first free practice.
The Macadam Triumph Racing rider beat Currie’s Oxford Products Racing Ducati by almost half a second at Donington Park this morning.
Jack Kennedy, who was fastest in the first group, ended third overall, just ahead of Tom Booth Amos, with Rhys Irwin fifth on the Suzuki.
Jack Nixon was the runaway leader in the GP2 class, with team-mate Owen Jenner second and Lucca Allen third.
And in the Cup class, Lynden Leatherland led the way, with Adon Davie second and Lewis Jones third.
Quattro Group British Supersport, GP2 and HEL Cup, FP1 result:
1. Luke Stapleford (Macadam Triumph Racing) 1min 31.714s
2. Ben Currie (Oxford Products Racing Ducati)
3. Jack Kenedy (Honda Racing UK)
4. Tom Booth-Amos (PTR Triumph)
5. Rhys Irwin (Astro-JJR Suzuki)