Yes it's possible to do a JAR PPL in Aus BAe Systems in Parafield Adelaide do them. There are also a few others in YSBK, YMMB.
What exactly do you want to know about flying down under, besides the fact that you can't navigate following the M1 or M25! And there aren't NDBs/VOR's every 4nm.
Wx is good for the most part and you'll find it a tad cheaper than the UK.
Do you hold a JAR PPL or thinking of getting one here in OZ? Cause you'll need to convert to the oz licence to fly here after getting your JAR one!
Not sure what other info you want!
ratings such as NVFR/PIFR/Tailwheel/Aeros/Formation can all be done.