Julian Correa kept control of the BTC action in second free practice as he remained fastest overall after both sessions.
His 1min 40.874sec lap kept him 0.114secs clear of George Bowes, as Amanuel Brinton clocked the third best time.
Fourth quickest was Lucas Brown, with Ryan Frost fifth.
R&G British Talent Cup, combined practice:
1. Julia Correa (Microlise Cresswell Racing) 1min 40.874s
2. George Bowes (Microlise Cresswell Racing) 0.114s
3. Amanuel Brinton (Kovara Projects/RS Racing) +0.314s
4. Lucas Brown (SENCAT Talent Team/Mortimer Racing) +0.382s
5. Ryan Frost (Fibre Tec Honda) +0.544s