The OSS Championship started as a series in 2009 and was created to provide a home for all prototype sports racing cars, be they open or closed top. As the name implies the regulations are kept open to attract cars of all types and engine size and also to enable the club competitors to exploit their design and engineering abilities in the quest for better performance.

The 2012 season will be it's third as a championship. Where fans of sportscar racing will be able to see an exciting mixture of cars such as Jades, Chirons, Junos, Radicals, Global Lights the unique Bowlby and an LMP2 Lola out on the track and racing regularly in a very competitive environment.

There are five classes;
Class A is for machinery over 2001cc
Class B covers cars between 1500 to 2000cc
Class C is for any sportscar between 1301 and 1500cc
Class D caters for the older Radicals from 1001cc to 1300cc
Class E offers an opportunity for cars up to 1000cc
Forced induction equivalence 1.7:1

This class system results in an eclectic and spectacular mix of sportscars lining up on the grid at every race. 2012 promises to be very exciting with a wider variety of cars as more competitors are attracted to the format of the OSS Championship.