23 I am unable to accept that submission. The finding that the appellant's use of amphetamine, in circumstances where he had foreknowledge of the likely consequences of his drug-taking, and his decision to continue doing so, should be viewed as an aggravating feature was in accord with orthodox principle and authority. His decision to revert to using drugs, after having remained drug-free for some months, with full knowledge of the consequences that were likely to flow from his doing so, brings this case squarely within the principles so comprehensively discussed by this Court in R v Martin[1] and the various cases cited therein. It is well established that substance abuse can, in some circumstances, constitute an aggravating feature of the offending and, in my opinion, her Honour did not err in treating the matter in that way in this case.