Thank you Malcolm Douglas. I've been singing this song for over 40 years and have never been able to give credit where it's due. It's always bothered me.
As a side-note - I once sang it while walking around among my audience. At the line "I'm going down to Warwick...." I found myself meeting the eyes of a young man sitting nearby. I sang it right at him. He and his companion fell about laughing. Seems his name was Warwick, although he hated it and no one ever dared to use it around him. The name is almost unheard of here in Australia. Funny business. Joy