Johnny Garness led his MLav VisionTrack Academy team-mate Carter Brown in first free practice.
The youngster set a best lap of 1min 38.089s to lead the way, with Ryan Hitchcock third. Fourth quickest was Harrison Crosby ahead of Matthew Ruisbroek.
Honda British Talent Cup, Brands Hatch, FP1
1. Johnny Garness (MLav VisionTrack Academy)
2. Carter Brown (MLav VisionTrack Academy) +0.858s
3. Ryan Hitchcock (City Lifting by RS Racing) +1.131s
4. Harrison Crosby (Banks Racing) + 1.170s
5. Matthew Ruisbroek (Microlise Cresswell Racing) +1.327s