All three G&S Kawasaki Racing riders completed their races at Oulton Park.
Dominic Usher was ninth and Tom Fisher 28th in the Stock 1000 while ‘The Flying Dutchman’ Kevin Van Leuven was 10th in the Stock 600 class.
Usher picked up seven championship points, bringing his total to 18 and moving him up the rider standings to 14th.
Van Leuven went up the rider standings to 11th on 38 points.
He said: “I am very happy with my result and given another few yards I would have been ninth.
“I was happy not to have to learn another new circuit this week.
“Having been here earlier in the year I had a good idea where I was going so I had a lot more confidence and it showed in my performance.”
The next round is at the Wyberton-based team’s home track of Cadwell Park over the August bank holiday weekend.