Thank you, that is brilliant! There are some tantalising references in the newspaper reports: in the 1960 reports it is expected that the race will be held annually, while the 1973 reports say that it had not been held for 10 years. So was the race run in 1961/2/3? I suppose it would need someone to delve into the archives of the local press to find out.
I also note that Chorley, the home of the 1960 winner, was not the Lancashire Chorley as I had assumed, but the village of Chorley between Nantwich and Malpas.