This large tree (1 of 2 growing close together), has been a mystery for decades, and like no other tree I’ve seen anywhere else locally. It could be semi-deciduous, it looked light-on in mature foliage, (main body of photo 1), with just fresh shoots, and bunches of small cream-white flowers in late Sept (Inset of photo 1). A month later, those new shoots have flourished endowing the tree with bright green new leaves, and the flowers are gone, (main body of photo 2). By late Dec the canopy has intensified to a darker green and thickened further (inset to photo 2). Photo 3 shows the leaves close up and how they connect to their branches. Photo 4 shows the trunk which is a bit like that of a Red Ash, but more fawn in colour, and more uniformly smooth. This, too, looks to be host to various lichens.
Photo 5 is another shot taken in September to provide more context . The second tree of this species is behind it and slighthly to the RHS, mostly obscured by the spindly (& dominant) Wattle of this area.