Which legal defences really work in NSW criminal courts? In this episode, Jazz and Bob reveal the top defence strategies used by expert criminal lawyers in Sydney — from self-defence and necessity to mental impairment and consent. Understand how experienced defence teams shape outcomes in serious cases. Brought to you by Best Sydney Criminal Lawyers. Visit our site for more episodes.
Top Criminal Defences Used in Sydney Courts
Welcome back to Criminal Law Uncovered, brought to you by Best Sydney Criminal Lawyers. In this episode, Bob and Jazz explore the most effective criminal defences used in New South Wales courts — strategies trusted by experienced legal professionals across Sydney.
Understanding Legal Defence in NSW
Before going into court, it’s critical to understand what legal defence options may apply to your case. These strategies are not just theoretical — they’re actively used by criminal defence lawyers to protect the rights of their clients in real-world trials.
Need urgent advice? Speak to our team at Jameson Law – Criminal Law Division.
1. Self-Defence
This is one of the most recognised and commonly used defences under Section 418 of the Crimes Act 1900 (NSW).
Used when the accused believed their actions were necessary to defend themselves or someone else.
The response must be reasonable in the circumstances as perceived by the accused.
2. Duress
This defence applies where someone commits a crime because they were forced or threatened in a way that would overwhelm the will of a reasonable person.
The threat must be serious and imminent.
Duress can be complex to establish — talk to a criminal defence expert before relying on it in court.
3. Necessity
This defence is used when an accused person claims they committed an offence to avoid a greater harm.
The act must be necessary and proportionate to the threat faced.
Often used in emergency scenarios — such as breaching a law to save someone’s life.
4. Mental Illness
Sometimes referred to as the “McNaughton defence”, this applies when the accused was mentally impaired at the time of the offence and could not understand their actions.
Governed by the Mental Health and Cognitive Impairment Forensic Provisions Act 2020 (NSW).
Often requires psychiatric evidence presented by both defence and prosecution.
5. Honest and Reasonable Mistake
This applies primarily to strict liability offences — where intent doesn’t need to be proven, but a mistake of fact can provide a full defence.
For example, unknowingly driving with a suspended licence based on misinformation.
The mistake must be both genuine and objectively reasonable.
Need help building a strong defence?
If you’ve been charged with a criminal offence in NSW, it’s vital to act quickly and strategically. Speak with our expert team at Best Sydney Criminal Lawyers or get in touch with our partner firm via Jameson Law.
Additional Criminal Defence Strategies
6. Consent
In cases like assault or sexual offences, proving the alleged victim consented can be a valid defence — but it’s highly sensitive and must be handled with care.
The onus is on the prosecution to prove that there was no valid consent.
This defence is often supported by witness statements, messages, or behavioural evidence.
7. Alibi
An alibi defence argues that the accused was somewhere else at the time the offence occurred — and therefore could not have committed the crime.
Alibi evidence may include CCTV, receipts, GPS data, or witness accounts.
If reliable, this can be a complete and compelling defence in court.
8. Intoxication
Intoxication is not a standalone defence — but in some cases, it can be used to challenge the mental element (mens rea) required to prove a specific offence.
Voluntary intoxication may not excuse conduct, but it can limit liability in specific intent offences like murder.
Involuntary intoxication (e.g. being drugged) is treated more seriously by the court.
More about intoxication and defence strategy at Jameson Law – Drink Driving and Drug Offences.
9. Automatism
This defence argues the act was involuntary — such as during a seizure, sleepwalking, or a dissociative episode.
Must be proven with strong medical or psychological evidence.
Rare but powerful when correctly applied.
Strategic Defence and Trial Preparation
Great criminal lawyers don’t just rely on one legal defence. They combine legal arguments with strategic timing, negotiation, and strong narrative presentation in court.
Choosing the right defence depends entirely on the facts and evidence of the case.
Defences can sometimes be run in the alternative — depending on how evidence unfolds during trial.
Need help navigating your matter? Reach out to our team at Best Sydney Criminal Lawyers for a confidential consultation.
Talk to the Experts
Facing charges in New South Wales? Don’t go into court without knowing your defence options. Our experienced solicitors build personalised defence strategies to give you the best possible outcome — in court or through early negotiation.
Visit BestSydneyCriminalLawyers.com.au or connect with our legal partner at Jameson Law for immediate legal support across Sydney and beyond.
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