R v Clarke

In the case of Wayne Robert Clarke, the appellant appealed against his conviction by verdict of a jury in the District Court for causing death by dangerous driving, as well as the sentence imposed. The collision occurred on 5 November 2001, near Yumali, where the appellant was driving a Freightliner prime mover towing a loaded trailer and collided with a Kenworth prime mover, resulting in the death of the deceased. The appellant claimed to have no memory of the hour prior to the collision. The appeal raised several issues, including the admission of evidence relating to the analysis of blood samples, the directions given to the jury, and the safety of the verdict. The central issue was whether the evidence of the forensic scientist, Mr Donald Sims, regarding the concentration of methylamphetamine in the blood samples was admissible.

The court considered the admissibility of expert evidence and the qualifications of the expert, Mr Sims. Mr Sims was well qualified to give expert evidence on the identification and measurement of foreign substances in human blood. The court noted that Mr Sims made a reasonable assumption about the cause of the blood sample denaturing, which was an important factor in his analysis. The court found that Mr Sims' process for analysing the denatured blood samples was reliable and suitable, despite the unusual circumstances. The court also highlighted that neither counsel explored with Mr Sims the implications for the accuracy of his estimate if his opinion about the cause of the denaturing was incorrect.

The court concluded that the appeal against sentence should be dismissed. However, the court allowed the appeal against conviction, set aside the conviction, and ordered a retrial. This decision was based on the grounds that the admission of the analysis of the appellant's blood was problematic, and the directions given to the jury on this topic were in error. The court found that the verdict was unsafe and unsatisfactory due to these issues. Therefore, the conviction was set aside, and a retrial was ordered.