Class
1 = 2wd cars up to and inc 1450cc    
2 = 2wd cars 1451cc to 1650cc, 8 valves    
3 = 2wd cars 1451cc to 1650 cc, 16 valves    
4 = 2wd cars 1651cc to 2050cc, 8 valves    
5 = Historic Category 1, 2, 3, 4 & FIA Appendix K cars complying with the 2019 General Regulations of Motorsport UK    
6 = Fwd cars 1651cc to 2050, 16 valves    
7 = Rwd cars 1651cc to 2050cc, 16 valves    
8 = 2wd cars over 2051cc, 16 valves    
9 = Any other 4wd cars not classified in Class 11 without sequential gearboxes (including previously FIA Homologated Group N 4WD cars)    
10 = FIA Homologated GpA 4wd cars, FIA Homologated Super 2000 cars and FIA Homologated R4 cars and any cars previously homologated as such, providing these run as per their FIA Homologation papers. All Metro 6R4’s and any derivative therefrom. Any other 4wd car not classified in Class 12, with a sequen    
11 = FIA Homologated WRC cars and cars previously homologated as such and FIA Homologated R5 cars. Any derivative therefrom