“The limit of its power is that the court must be satisfied that, taking the case as a whole, the appellant is not being dealt with more severely on appeal. That requires a detailed consideration of the impact of the sentence to be substituted which must involve considerations of entitlement to automatic release, parole eligibility and licence. If a custodial sentence is reduced, the addition of non-custodial orders (such as disqualification from driving or sexual offences prevention orders) may be added but, in every case, save where the substituted sentence is “ameliorative and remedial”, that sentence must be tested for its severity (or potential punitive effect) compared to the original sentence.”