The parity ground should be formulated using 'not reasonably open' language rather than 'justifiable sense of grievance', as this removes any suggestion that the offender's subjective state of mind is relevant. Further offending on bail and a co-offender's impaired mental functioning engaging Verdins principles 2, 5 and 6 are material differences capable of justifying significant sentencing differentials between co-offenders.
The full text is available to signed-in members, including the 3 later cases that cite this judgment.
1 of the 3 citing cases carry a classified treatment. How each court treated it is available to signed-in members.