Kenneth Williams as Rambling Sid Rumpo was a British institution. Most folkies of that era (including myself) regarded the songs as a bit of fun, alongside similar spoofs by the Two Ronnies and Bennie Hill. Pastiche, like imitation, can be a sincere form of flattery.

There is at least one clip of Paul McNeil on YouTube, posted, I believe, by his son. It's not his best work and is only illustrated by black and white photos, but one frame shows the top of a small guitar with a zero fret. I don't remember whether his 0-18NY had that feature.

Alan