No sooner do I post a reply and look more closely at the map, then it all comes back to me.
I didn't get as far as Wetstones, but IIRC, it's a possible feeder into the brook/stream just south of Swinscoe.
There is a large unnamed swallet just south of New House Farm, Swinscoe, by a public footpath, which swallows a substantial stream, there is a body sized gap that could be pushed in said swallet.
The stream is a bit weird as there are sinks and risings virtually the whole length, presumably some act as estavels - both sinks and risings. A giveaway is a hill called Limestone Hill on the map.
There are 2 streams east and south east of Stanton, I didn't check them for cave features, maybe worth a check.