Maybe not Well lane as that does seem to exist, but I have worked out where I got that idea from. Looking in my late wife's address book I see that some old friends of hers moved from London to Findon in, I guess, the early 80s. I don't think she saw them afterwards, but Christmas cards were exchanged for years and the address was Well Cottage, Cross Lane, Findon. For some reason I never connected the address with the well we dug. So perhaps it was on Cross Lane.
Anyway, somewhere I have the original sheet of paper I was given to get myself there in 1967 or 1968. I'll try to find that tomorrow (I have just got home from work).
As you may have guessed, Harry Pearman was heavily involved in the project. There is bound to be a write up in the Chelsea journals of that time. It was very deep!
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