Spoke to Stan today, he insists that it's not blocked and also re-iterates that it's not on his land. Him and the land owner (who is not keen on caving) are discussing gating it and having the key available to suitable cavers. I didn't find any more out as this lead on to a ridiculous but funny discussion of what constituted a 'suitable caver'.
I guess if the land owner isn't keen then, like Goydenman says, it's best to stay away until something is sorted rather than risk future access.
Incidentally, I found an excellent 'geode' in Goyden which i've never seen before dispite it being in a blindingly obvious place!
George