The Supreme Court's power under s 36(4) of the Magistrates Court Act 2004 (WA) to grant relief on judicial review is conditioned upon establishing a reviewable error under s 36(1); the words 'if it is just to do so' do not confer a power at large. A court cannot compel disclosure of information subject to a claim of legal professional privilege to the opposing party's lawyers under a confidentiality undertaking regime without first determining the validity of the privilege claim. The practice of limiting disclosure of confidential commercial information subject to undertakings (as in [name withheld] v [name withheld]) does not apply to information subject to a valid claim of legal professional privilege.
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