Championship
MSA = Protyre MSA Asphalt Championship    
KOE = HireFit - King of Epynt Challenge    
WTC = JD Tyres Welsh- National Tarmacadam Championship    
ANWCC = ANWCC Stage Rally Championship    
S1000 = Senior 1000 Championship    

Class
CLASS N2 = FIA Group N - 1400cc to 1600cc    
CLASS N3 = FIA Group N - 1601cc to 2000cc    
CLASS N4 = FIA Group N - Over 2000cc    
CLASS B10 = 1400cc to 1600cc 2WD (inc R1)    
CLASS B11 = 1601cc to 2000cc 2WD    
CLASS B12 = 1601cc to 2000cc (4 Cylinder 8 Valve Naturally Aspirated) 2WD    
CLASS B13 = Over 2000cc 2WD    
CLASS B14 = Over 2000cc 4WD Non-WRC cars inc R4 (as per FIA App J Art 260) and ANY 4WD car not complying with class B15 or R5    
CLASS B15 = Homologated or Non-Homologated current or former WRC cars or any derivative of WRC, R5 or S2000 not following FIA app J Art 261 (R5+, S2500)    
CLASS R2 = 2018 FIA R2 (atmospheric over 1390cc and up to 1600cc – and turbo over 927cc and up to 1067cc)    
CLASS R3 = 2018 FIA R3 (atmospheric over 1600cc and up to 2000cc - and turbo over 1067cc and up to 1620cc - and diesel up to 2000cc    
CLASS R5 = 2018 FIA R5 Homologated and non homologated cars built to FIA App J Art 261 inc S2000 and RRC (Homologated Specification)    
CLASS H1 = Historic Category 1, 2 and 3 cars up to 1600cc, and Category 4 cars up to 1400cc    
CLASS H2 = Historic Category 1, 2 and 3 cars with single cam engines over 1600cc, and Category 4 cars up to 1600cc    
CLASS H3 = Historic Category 1, 2 and 3 cars with multi cam engines over 1600cc, and Category 4 cars over 1600cc    
CLASS H4 = Historic Category 4b cars over 1600cc which comply with R49.1.5    
CLASS 1400C = Cars up to 1400cc with either 8v Engines, Engines with more than 8 valves that retain the standard fuel and inlet manifold systems or Current and former FIA Group N1 Cars.    
CLASS 1400S = All other cars up to and including 1400cc    
CLASS R15 = Road Rally Class - Cars must conform to the MSA Road Rally Regulations and also conform to Stage Rally Specifications. With reference to R.18.6.1, advertising will be permitted.