The Porsche Carrera Cup GB heads north of the border to Scotland’s premier circuit, Knockhill for rounds 13 and 14 of the championship this weekend, where five Scottish drivers are aiming for home glory.

Top of the Scottish pack in the championship is Rory Butcher, currently lying fourth, he has a head start at Knockhill with an impeccable knowledge of the circuit as the son of circuit owner Derek, where he is an instructor. At Croft Butcher was dominant, winning both races, and is looking to mirror that pace at his home circuit.

Aberdeen’s Glynn Geddie is running alongside Butcher in the Pro category, although in the 2012 season he has yet to deliver the results expected of him, but with Knockhill being the track which suits Geddie’s natural pace and gutsy style, he could be right in the mix alongside Redline Racing team mate, title favourite and championship leader, Michael Meadows.

Battling for glory in Pro-Am1 are West Kilbride’s Derek Pierce of JD Pierce with Team Parker Racing and Edinburgh’s Oly Mortimer of GT Marques. Pierce is overdue good luck to back his undoubted pace, while Mortimer and the team have been working wonders with their limited budget. Heading North, Pierce head Mortimer by a single point as they chase down leader Ahmad Al Harthy in his Oman Air-backed Redline Racing machine.

Completing the Scottish line up is Edinburgh’s George Brewster in the second Montrose-based Celtic Speed Porsche. The former Pro-Am2 champion is contesting a part-season campaign but is aiming for a Pro-Am1 podium on home turf.

Back to Pro, Team Parker Racing’s Sam Tordoff heads to Knockhill with a fabulous weekend at Snetterton behind him, where he took two wins to move up to his current second place, at the expense of Juta Racing’s Jonas Gelzinis. Tordoff has a battle on his hands with Daniel Lloyd, Gelzinis and Ben Barker all pushing to topple Tordoff as Meadows’ main threat – both could be potential race winners.

Finally, the contest for Pro-Am2 glory is set to be between Welsh teenager, Fraser O’Brien and Sibsport Performance’s Tania Mann after O’Brien made a spectacular debut at Snetterton last time out where he finished 12th overall and came out as Pro-Am2 winner.

Catch the Porsche Carrera Cup GB races on ITV4, ITV4 HD and itv.com/touringcars on Sunday August 26.