The Court held that 'additional costs' under s 7(1) of the Official Prosecutions (Accused's Costs) Act 1973 (WA) requires a clear causal connection between the costs claimed and the specific charges on which the partly successful accused succeeded; costs incurred before the successful ground was identified and unrelated to it do not qualify. Even if the threshold were met, the Court indicated it would have declined to exercise the discretion in favour of the appellant where all original grounds were devoid of merit, the successful ground was identified and raised by the court itself, and the appellant's materials were premised on pseudolaw/strawman duality theories that unreasonably consumed public resources.
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