Sounds silly, but I couldn’t remember where Haddenham was – until I started looking through the photos and it all came back to me. Attended again the following year, just doing those photos now!!
Link to photos in gallery for larger screens

Photos below ideal for mobile phones:-

KM7100

ERD158

U4171

KE3865

John Deere

Allis-Chalmers

G6470

DL5478

BH1987

Monarch