Where an accused denies uncharged conduct (such as domestic violence), defence counsel is bound by those instructions to challenge evidence of that conduct and is prohibited from inviting the jury to accept it, even as part of a 'motive to lie' strategy. A forensic strategy whose very premise requires the jury to accept something the accused denies is unavailable from the outset and constitutes a substantial miscarriage of justice, without the need to weigh advantages and disadvantages of the strategy. The distinction drawn in [name withheld] v The Queen between assessing whether a forensic decision was reasonably open does not apply where the strategy was simply unavailable on the instructions.
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