Manhal Allos and Alex Kapadia kept their Radical European Masters title hopes alive with two podiums at Silverstone for RAW Motorsports.
Kapadia led race one from the eighth lap but pit-stop left Allos to rejoin fifth.
His charge took him to third and looked destined to finish there until the leader expired just after a safety car intervention and they claimed a late third.
Having held a strong third throughout his opening stint, Allos handed to Banbury team-mate Kapadia to complete race two but a safety car mix-up effectively gave the top four a lap lead. That left Kapadia in fifth, he fought back to finish fourth before the pair claimed a second half victory in the third race.
Defending SR3 class champions Marcelo Marateotto and Marco Cencetti lost a podium in race one when another car expired in front of them and brought a collision.
But they won their class in both of their other races.