I dont' write about British radio much but this was too great to pass up. Kenneth Charles Williams played the character Syd Rumpo on the BBC "Round the Horne" comedy program. It ran from 1965 until 1968 in 4 weekly episodes.
The Rumpo Character is part Woody Guthrie and part Bob Saget in the role of an old English folk singer. The songs vary from the nonsensical to pretty clear sexual innuendo. To my knowledge we never had anyone like this in American broadcasting even though plenty of actual folk music was quite dirty. Instead we ended up with Burl Ives. Epic fail.