Filip Surowiak edged out Lucas Brown by just 0.001secs to lead FP1 at Brands Hatch, with a best lap of 1min 38.147s.
Amanuel Brinton ended the opening session third, just 0.129secs off Surowiak as Ryan Frost took fourth with Clayton Edmunds fifth.
R&G British Talent Cup, FP1 result:
1. Filip Surowiak (Team City Lifting/RS Racing) 1min 38.147s
2. Lucas Brown (SENCAT Talent Team/Mortimer Racing) +0.001s
3. Amanuel Brinton (Kovara Projects/RS Racing) +0.129s
4. Ryan Frost (Fibre Tec Honda) +0.372s
5. Clayton Edmunds (Team City Lifting/RS Racing) +0.455s