We cycled to Deene, then almost to Bulwick - had to cross A43 to get there. Just before Bulwick we turned right and uphill, the along the road to Southwick. The World Conker championship is held there on Sunday 12 October this year. http://www.bbc.co.uk/news/uk-england-northamptonshire-29574953
We went once years ago when it was in Ashton.
Then it was uphill from Southwick to the water tower, then down the other side to Glapthorn and finally Oundle.
When we got home it began to rain and there were several claps of thunder. Excellent timing!