Cycling legend Hoy, who has only been racing cars competitively for a year, took the rostrum in race two having come within touching distance of bagging the win.
Minshaw contested the early stages, then Keen took over their Porsche and set about catching the Motorbase-run Aston Martin of Ahmad Al-Harthy and Michael Caine. Minshaw quickly chased Caine done and passed him on the run to Les Combes.
The Aston finished second ahead of the sister Motorbase car of Rory Butcher and Jeff Smith.
Sims had started from pole but was passed by Reip during the opening tour. The Belgian was able to maintain the lead as the safety car was deployed, and handed over to Hoy in P1.
But when racing resumed the Scot was under heavy pressure from the experienced Attard, and the BMW found its way past shortly afterwards.
The win was Attard and Sims' second of 2014. Attard now leads the standings from Sims, who missed the Snetterton round, with Andrew Howard and Jonny Adam third.