Amanuel Brinton knocked Evan Belford off the top spot in the closing minutes of second practice with a lap of 1min 36.076secs to lead the way by 0.263s.
Harley McCabe ended the day third quickest, 1.384secs adrift of leader Brinton, as Rhys Stephenson was fourth and Lucas Brown rounded out the top five.
R&G British Talent Cup, FP2 result:
1. Amanuel Brinton (Kovara Projects/RS Racing) 1min 36.076s
2. Evan Belford (City Lifting/RS Racing) +0.263s
3. Harley McCabe (McCabe Racing) +1.384s
4. Rhys Stephenson (Rocket Racing) +1.566s
5. Lucas Brown (Amphibian Scaffolding/SP125 Racing) +1.595s