Ben Sharpe was fastest in the Free Practice session at Donington Park in the Cup Class, topping the times in what was a close session in class, as Travis Coyne set the fastest time in the Production Class.
With the top six Cup Class drivers covered by just under a second, Sharpe was fastest with a time of 1:18.050, just beating title contender Jamie Tonks into second place with a 1:18.402.
Matt Luff set the third quickest time in class with a 1:18.477, just pipping Morgan Bailey with Martin Dalzell completing the top five positions.
Championship leader Alastair Camp set the sixth-fastest time of 1:19.009 ahead of George Alp-Williams and Dave Buky, with Ross Darlington and Ryan Bensley completing the top ten fastest times in the Cup Class.
Travis Coyne set the fastest time in the Production Class with a 1:21.448, ahead of class leader Mervyn Beckett, who was just under four-tenths of a second slower than the JamSport Racing driver.
Alfie Threlfall and Mark Hughes were next up in the session, with Edward Sibbald putting his Civic inside the top five times in class.
Matthew Stenning was sixth fastest ahead of Simon Welch, with Harry Threlfall, Jon Peerless and Lee Forinton completing the top ten fastest times in the Production Class.