This is one of the cars that took part in the two of the races at the Cheshire Cats' Trophy Meeting organised by the Jaguar Drivers' Club at Oulton Park in April 1987.
It's a 3 litre Porsche 911 Carrera entered by C.A.S Motor Sport which as number 27 was driven in the 15 lap Gordon Russell Furniture Inter-Marque Championship Race by Richard Chilton. The notes in the programme of the event for the 36 lap Cheshire Cats' Trophy Race say; 'A 100 mile race for Roadgoing Production Sportscars with a current Road Fund Licence. Co-Drivers are allowed and a pit stop is mandatory between laps five and thirty-two. Refuelling is not allowed.' In that race the Porsche was number 25 and the driving was shared by Richard Chilton and Michael Phillips.
Here's the car in that second race rounding Lodge Corner.