SC is Senior Counsel, a term that has replaces QC (Queens Counsel) or KC (K8ngs Counsel) in most Australian States, I honestly hav3n’t tried to keep up, but I know South Aus was looking at reverting to QC a few years back, not sure if the did or not. NSW changed to SC mid 90s (so over 35 years ago) and also changed from a tap on the shoulder by the Attorney General to an application to the Bar Association, there can’t be many KCs left in NSW, but I do know a couple