Muttley, unfortunately I only have this on vinyl and don't have a working turntable so it's been quite a while since I've had a good listen. I just played the sound clip on Amazon to fugire out the key and can give you my best version of the verses, but I can't remember exactly where they go on the chorus. Perhaps someone else will be able to help with that, or with fixing any wrong chords I've given based on a faulty memory.

The chord they start on is F# minor. I'm a simple guitar player, so I'm going to give you chords starting on E minor. You can transpose if you like or just throw the capo in the second fret if you want to play along with the record...

Am       Em    Am          Em   A maj          G
Four and twenty bonny bonny boys playing at the ball

Am    Em   C          Em    Amaj                B
Along came little Sir Hugh, he played with them all

   G                            D                  C
He kicked the ball very high, he kicked the ball so low

   G         D       Em    D          Em    D       Em
He kicked it over the castle wall where noone dared to go


Hope this is a bit helpful.

Margaret