Porsche renewed their stranglehold on the British GT Championship at Snetterton yesterday with Ahmad Al Harthy/Michael Caine and David Ashburn/Nick Tandy taking a victory apiece with their the 997 GT3 R's.

In the opening race Phil Keen relived Newmarket's Caine of the lead just after half distance but the Porsche he was sharing with Jon Minshaw was given a post race penalty for an overtaking infringement elevating the Suffolk racer and co-driver Al Harthy to victory.

The early laps had seen Rembert Berg lead with his Audi R8 LMS before Andrew Howard took over with his Aston Martin Vantage but neither team had an answer to the Porsches as the race went into the second half.

In race two Tandy forced his way past the BMW Z4 of Joe Osborne to open up a sizeable lead before handing over to team-mate Ashburn who ended the hour long event at the head of a tight four-car train.

Steve Tandy, in the BMW he was sharing with Dan Brown, tried hard to dislodge the leader at Murrays on the penultimate lap leaving himself open to attack from the chasing Mark Patterson (Audi R8 LMS) and Lee Mowle, driving the BMW in place of Osborne.

For the series leading BMW Z4 of Marco Attard/Oliver Bryant it was a weekend to forget with a brake problem knocking them out of race one while the pair could only salvage seventh place in race two.

Dereham's Dan Eagling opened up a sizable race two lead in the GT4 category but team-mate Matt Smith was unable to hold on and the pair ended up third after a fourth-placed finish for the Watton-based team in the opening event.

The Formula 4 races were hard fought with the championship leader Jake Dalton breaking a driveshaft in race one which allowed James Fletcher to take his first series victory after a mature drive.

A three car accident caused a race two stoppage before Struan Moore led the restarted event from start to finish while Charlie Robertson controlled race three throughout but suffered a post race exclusion for a technical infringement handing victory to Jake Hughes.

Results

British GT

Race one: 1 Ahmad Al Harthy/Michael Caine (Porsche 997 GT3R); 2 Rembert Berg/Warren Hughes (Audi R8 LMS Ultra); 3 Gregoire Demoustier/Duncan Tappy (McLaren MP412C); 4 Andrew Howard/Jonny Adam (Aston Martin Vantage); 5 Mark Patterson/Matt Bell (Audi R8 LMS Ultra); 6 Jason Minshaw/Benji Hetherington (Mercedes AMG SLS).

Race two: 1 Nick Tandy/David Ashburn (Porsche 997 GT3R); 2 Dan Brown/Steve Tandy (BMW Z4); 3 Matt Bell/Mark Patterson (Audi R8 LMS); 4 Joe Osborne/Lee Mowle (BMW Z4); 5 Jonny Adam/Andrew Howard; 6 Benji Hetherington/Jason Minshaw.

BRDC Formula 4

Race one: 1 James Fletcher; 2 Charlie Robertson; 3 Seb Morris (Check)

Race two:1 Struan Moore; 2 Raoul Hyman; 3 Falco Wauer.

Race thee: 1 Jake Hughes; 2 James Fletcher; 3 Jake Dalton.

Ginetta GT5 Challenge

Race one: 1 David Pittard (G40); 2 Jake Giddings (G40); 3 Brad Bailey (G40);

Race two: 1 David Pittard; 2 Brad Bailey + 0.711s; 3 Mark Davies (G40).

Race three: 1 Will Burns (G40); 2 Brad Bailey; 3 Luke Davenport (G40).

VAG Trophy

Race one: 1 Aaron Mason (VW Golf GTi Mk5); 2 Paul Taylor (VW Golf R32 Mk4); 3 Stewart Lines (VW Golf GTi Mk5).

Race two: 1 Ken Lark (Corrado VR6); 2 Aaron Mason; 3 Stewart Lines.

VW Mk2 Golf GTi Championship

Race one: 1 James Bark; 2 Harry Vaulkhard; 3 Herry Wright.

Race two: 1 Jamie Martin; 2 James Bark; 3 Harry Vaulkhard.

Volkswagen Racing Cup

Race one:1 Philip House (Scirocco R); 2 Ross Wylie (Scirocco R); 3 Aaron Mason (Scirocco R).

Race two: 1 Ross Wylie; 2 Aaron Mason; 3 David Sutton