R v TH; R v MT; R v Me; R v MC

The defendants, MC, MT, ME and TH, were charged with various criminal offences related to their involvement in outlaw motorcycle gangs. The case was heard in the Supreme Court of New South Wales. The central issue before the court was whether reports prepared by a police officer, which were to be presented as expert evidence in relation to outlaw motorcycle gangs, should be admitted into evidence or excluded. The defendants objected to the admission of these reports, arguing that the police officer did not possess the requisite specialised knowledge to qualify as an expert and that the reports were unfairly prejudicial to them.

The court considered the qualifications and experience of the police officer in relation to outlaw motorcycle gangs, as well as the content and purpose of the expert reports. It was determined that the police officer did not have the necessary specialised knowledge to qualify as an expert in this context, and that the reports were therefore inadmissible under section 137 of the Evidence Act 1995 (NSW). The court found that the reports were not only unhelpful in assisting the jury to resolve an issue requiring specialised knowledge, but also had the potential to unfairly prejudice the defendants by portraying them in a negative light. The court concluded that the prejudicial effect of admitting the reports substantially outweighed their probative value.

As a result, the reports dated 19 May and 17 November 2020, purporting to express expert opinions in respect of outlaw motorcycle gangs, were excluded in each of the joint trials of MC, MT, ME and TH under section 137 of the Evidence Act 1995 (NSW). This decision highlights the importance of ensuring that expert evidence is both relevant and reliable, and that it does not unfairly prejudice the accused.