Hi Nev,
   hmm, lawyers strike again. Still, those excellent Qld Gov data could be somewhat shaky as you say, with this CC-BY issue raising its head. I found some discussions, especially
https://community.openstreetmap.org/t/possible-access-to-qld-govt-data/109349
where user Fizzie41 is making a heroic effort to get permission. Wish I could make the same effort, but with a day job and not even living in Australia most of the time it's out of my reach. Guess I'll have to stop using that data and revert back to Bing which in comparison is an order of magnitude less good. Shame because there is so much really good information on that government server, and I bet the officials are all probably completely fine with providing it in an open way except for worries about lawyers.
Cheers, Peter