Mason Foster topped the timesheets on his final lap in this morning’s first practice session at Assen.
As the series resumed at the Dutch track, the Ultrawhippet rider led the way by 0.229secs over Jack Burrows, after a best lap of 1min 55.218secs.
Jack Dunabie was third quickest, 0.324secs behind Burrows as Tyler Humphries was fourth and Thorley Trevorrow fifth.
R&G Moto4 British Cup, FP1:
1. Mason Foster (Ultrawhippet) 1min 55.218s
2. Jack Burrows (Burrows Engineering/RK Racing) +0.229s
3. Jack Dunabie (Kovara Projects/RS Racing) +0.553s
4. Tyler Humphries (Fibre Tec Honda by MLav Racing) +0.608s
5. Thorley Trevorrow (Fibre Tec Honda by MLav Racing) +0.782s