Champs
BHRC = FUCHS Lubricants Motorsport UK British Historic Rally Championship    
NORTHERN = Motorscope Northern Historic Rally Championship    
RALLY 2 = Rally 2WD Challenge    
BORDER = Border Challenge    

Class
= Catergory 1 registered before 31.12.67    
B2 = Cars upto 1300cc    
B3 = Over 1301cc to 1600cc including excluding Twin Cam engined cars    
B4 = Over 1601cc including Twin Cam engined cars    
B5 = Cars Over 2000cc including Porsche 911's    
= Catergory 2 registered between 01.01.68 and 31.12.74    
C2 = Cars upto 1600cc including 2 vavle twin cam engines    
C3 = Over 1601cc upto 2000cc    
C5 = Cars over 2000cc including ALL multi valve Twin Cam engines    
= Category 3 registered between 01.01.75 and 31.12.81    
D2 = Cars upto 1600cc including 2 valve Twin Cam engines    
D3 = Over 1601cc to 2000cc    
D5 = All other Mutli valve Twin Cam engined cars    
= Category 4a registered between 01.01.82 and 31.12.85    
E1 = Cars upto 1600cc    
E2 = Cars Over 1601cc    
= Category 4b Registered between 01.01.86 and 31.12.90    
F1 = Cars upto 1600cc    
F2 = Cars over 1601cc    
= Category K FIA appendix K cars registered before 31.12.85    
G1 = Cars upto 1600cc    
G2 = Cars over 1601cc    
= 2WD None Historic Cars    
A1 = 2WD Cars upto 1400cc    
A2 = 2WD Cars 1401cc to 1600cc    
A3 = 2WD Cars 1601cc to 2000cc    
A4 = 2WD Cars Over 2001cc    
A5 = All 4WD Cars    
= Category 1 Registered before 31.12.67    
BB2 = Cars Upto 1300cc    
BB3 = Cars Upto 1600cc excluding Twin Cam Engined cars    
BB4 = Cars Over 1601cc including Twin Cam Engined Cars    
BB5 = Cars Over 2000cc including all Porsche 911s    
= Category 2 Registered between 01.01.68 and 31.12.74    
BC2 = Cars Upto 1600cc including 2 vavle twin cam engines    
BC3 = Cars 1601cc to 2000cc    
BC5 = Cars Over 2000cc Including all Multi Valve Twin Cam Engined Cars    
= Category 3 Registered between 01.01.75 and 31.12.81    
BD2 = Cars Upto 1600cc including 2 vavle twin cam engines    
BD3 = Cars 1601cc to 2000cc    
BD4 = Cars Over 2000cc Including all Multi Valve Twin Cam Engined Cars    
BF1 = Cars Upto 1600cc    
BD5 = All Other Multi Valve Twin Cam Engined Cars    
= Category 4a Registered between 01.01.86 and 31.12.90    
BE1 = Cars Upto 1600cc    
BE2 = Cars Over 1601cc    
= Category 4b Registered between 01.01.86 and 31.12.90    
BF1 = Cars Upto 1600cc