WDE Motorsport’s Rivett had finished the race in third and looked set to take a handy 18-point lead into the season’s final two rounds at Brands Hatch at the end of this month.
However, after reviewing an incident during the race officials have disqualified Rivett from the result. His disqualification also carries an automatic deduction of four championship points and a four-place grid drop at the next round.
It should also have promoted Coates up to third place but a time penalty for the Team Pyro driver (after officials looked into another incident) means he stays fourth. Instead it is Rivett’s WDE team-mate Lee Pattison who moves up to third.
WDE has now formally lodged appeals against both decisions – to be heard at a later date by UK motor sport's governing body the MSA's National Court.
In the interim it means that going to Brands Hatch’s season finale just seven points cover the top three in the championship standings with Coates moving back into the lead on 277 ahead of Rivett in second on 271 and Westbourne Motorsport’s James Dorlin in third on 270.
Furthermore, DRM’s Daniel Rowbottom in fourth suddenly comes back into title contention – 49 points behind Coates with a maximum of 56 to be had in Brands Hatch’s final two rounds.
All points remain provisional.