The case of the mystery plant I posted about a year ago was solved by a reader, Noni, who pointed out that it is a Pittosporum undulatum and is considered a weed in Victoria.
I was at a school fete the other day as it is fun seeing what I can find at the trash and treasure stall and also at the plant stall. There were the usual bunch of succulents, but I had most of them. Among other items there was a plant just like the one above. Because it looks a little like a rhododendron, I imagine some poor unsuspecting soul might end up buying it under a misapprehension. At least it wasn’t me!