At each BTCC race meeting the crowds are kept further entertained by appearances from five high profile supporting championships from popular manufacturers Porsche, BMW, Renault and SEAT.
Two of those championships, Formula Renault UK and Formula BMW UK, are contested by ambitious, young drivers each aiming for a future in Formula 1. The other three are production car championships - Porsche Carrera Cup GB, Renault Clio Cup and SEAT Cupra Championship. These attract a mix of career-minded drivers and amateurs out to enjoy their racing.
Each championship races twice during a BTCC event - Porsche is present at all ten meetings, the other four appearing at nine events. That means in addition to seeing their BTCC heroes in action three times, the crowds also get at least another eight races to enjoy.