Spalding businessman Andy Molsom led the way at the halfway stage of the Caterham Graduates Championship.
Rounds seven and eight saw a visit to the fastest circuit in the UK at Thruxton with two fourth-place starts in qualifying.
The first race saw Molsom make a good start up to third. However on the second lap, he was caught out by some oil left on the track and rejoined in last place.
He soon made his way back up to fifth but, despite breaking the lap record with an average speed of over 96mph, he couldn’t catch the lead group of cars.
The second race was closely fought from the off and Molsom led at the end of the first lap.
Due to the slipstreaming nature of the high-speed Thruxton circuit, there were multiple lead changes every lap.
It also began raining on half of the track so grip levels were changing every lap.
Molsom finished the race in a creditable third.
He said: “Thruxton is unlike any other circuit, it is flat out for most of it, with just two braking areas.
“This lends itself to close racing as slipstreaming makes a huge difference to lap times.”
Molsom completed the fastest lap in the first race, breaking the existing lap record by nearly half a second.
He added: “It was a good weekend, however I was unlucky in the first race, but still solid results.”
Molsom left Thruxton on top of the championship but he dropped to second after the meeting at Brands Hatch in Kent.
Rounds 11 and 12 are at Oulton Park on August 6.