There has been much discussion on The Sick Note on previous threads.
I Quote from Pat's website:
"It is generally assumed that I based this song on Gerard Hoffnung's wonderful address to THE OXFORD UNION in 1958. This is not correct. The recitation in a more simple form dates back to the English Music Hall's of the 1920's and was printed in the Readers Digest in 1937 in the form of a story. The fine Scottish singer and songwriter Dick Gaughan details some of the above on his Homepage together with comments by Sam Hinton. The song is unique in as much as it appears under such a galaxy of titles but is always the same song. Its worldwide popularity, with over 100 recordings to date, is indeed a wonder to me when I think back to it's humble beginnings in The Dyer's Arms, in Coventry. I am naturally delighted that so many wonderful artists have recorded and performed my song over the years and I am proud that the song has given so much pleasure to so many people. Long may it continue to do so."