Louis Foster dominated the final Ginetta Junior race of the weekend to make it three from three victories at Silverstone while his championship rivals were caught in a five-car fight for second.
Patrick Kibble snatched the race lead off the line but a move up the inside at Brooklands put Foster back in the lead. From there, he was able to pull clear from the rest of the field and enjoyed a quiet race to finish almost four seconds ahead of title rival Adam Smalley.
After dropping back out of the lead, Kibble found himself under pressure from the Elite Motorsport duo of Smalley and Finley Green. Ruben del Sarte and a slow starting Luke Browning soon joined the battle. The five drivers swapped positions at almost every corner.
After falling back to fifth early in the race, Smalley managed to climb back to the front of the fight. With team-mate Green acting as a rear gunner, he started to eat into Foster’s lead, which at one point was more than five seconds.
Green was drawn back into the battle behind him in the closing tages of the race, with Browning briefly pulling alongside him. The Elite Motorsport driver held onto third until the final lap, when he ran off and span, plummeting down the order.
Kibble, who had occupied every position from sixth to first at various points, finished third ahead of James Taylor, who joined the lead fight late in the race.
Browning had to settle for fifth ahead of del Sarte and Lorcan Hanafin, who spent the race battling with Tom Emson.
Emson took the chequered flag eighth, with Gus Burton and Ethan Hawkey completing the top 10.