It was just after that occasion when the Aussie PM was photographed 'handling' the Queen, if that helps.
I seem to recall that the guys who made the wooden frame for the fuselage had made a noose and strangled and empty can of Fosters with a placard below it reminding the PM what he would get if he didn't keep his hands off of 'Betty'
We had several aircraft come through the workshop in a period of just a few years so I can't remember which one it was. I had some DH manuals here for the Hydromatic props until a few years ago. I'll have to have a think about where they went.