The Porsche Club Championship has already provided some exciting racing this season, and this Saturday's visit to Silverstone should be no exception. Reigning champion Mark McAleer heads the points table, but Class One rival Ian White is the man in form, having won two of the last three races in his 964.

Class One of the Club is the biggest and most competitive class, with the 968 CS having become numerically the most popular model, McAleer having become the first outright champion to use the model last year. With White's rear-engined 964 C2 always quick off the line and with classic Porsche layout traction, and the 968s holding the advantage on other parts of the circuit, their battle is usually closely matched.

White won at Oulton Park, and was leading the first race at Brands Hatch earlier this month before a moment through Paddock Hill Bend, which allowed Gary Duckman through to take his first overall win. White won the second race at Brands Hatch to close on the championship lead, McAleer scoring consistently despite a misfire that slowed him at the Kent circuit.

Class One has strength in depth, with several former overall and class champions in the ranks of prospective race winners. Other drivers to watch for include Ben Demetriou, the evergreen Brian Robinson, and Paul Livesey.

In Class Two Chris Dyer is the points leader, though Trevor Lewis won last time out at Brands. An engine problem denied Lewis a strong finish at race one at Brands, and he will be keen to score points once more at Silverstone.

Jeremy Clarke found his form at Brands Hatch to win Class Three in both races at Brands Hatch, while Sarah Bennett-Baggs continues to lead the class points table.

The two 30-minute Porsche races are scheduled for 12.27 and 16.29.