Child's B version, from Motherwell's Mss, does not have the "prickly bush" chorus, but instead has:

Hey the broom, and the bonny, bonny broom,
The broom o the Cauthery Knowes!
I wish I were at hame again,
Milking my ain daddie's ewes.

These words do not sit very easily with the "usual" tune: is there any tune known for this version, either in Bronson or from a revival recording?