Slater has been the class of the Ginetta Junior field this year, utterly dominating the opposition and winning seven of the nine races to date.
But it could easily have been a 100% success record, had Slater not received track-limits penalties in one race at each of the Silverstone and Donington events.
Nevertheless, he has still shot up Autosport's winners' table, rising five places into third.
And, with six races as part of Ginetta's G Fest meeting at Silverstone this coming weekend, there is the potential for him to now usurp Aidan Hills's nine wins at the top of the rankings.
Reade has also been the standout star of the Ginetta GT Championship in his G56, although his 100% record was broken at Donington when a suspected driveshaft failure on the grid left him as a non-starter. But his other two Leicestershire triumphs still enabled him to leap from 25th to sixth.
That is one position higher than one of the other notable movers of last weekend, Northern Irish Sevens racer Graham Moore.
He scored another two victories at Kirkistown at the wheel of his self-built GMS machine to take his tally for the year to six and enable him to climb 25 places.
Source: Autosport