Williamson and Associates has been in practice for over 25 years. Our Team is ideally equipped to handle your matter, no matter what problems you face. We will also ensure that the best Barristers are briefed to appear for you. Shift your problem to us so that we can solve it for you.

Jennifer Williamson

Principal Solicitor
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Jennifer has been in private practice as a Solicitor for over 25 years. As the principal of Williamson & Associates, she manages a team of dedicated staff, committed to the very highest level of representation that Jennifer sets as a standard. As a litigation specialist, Jennifer provides expert advice in all areas of Williamson & Associates’ practice from Criminal Law, Family Court matters, Supreme Court litigation in Commercial and Succession Law. Jennifer ensures that clients receive representation at a fair price, and in matters involving Court proceedings, engages the ideal Barrister for the task. While other firms may attempt to have a Solicitor argue your matter in Court, Jennifer prides herself on ensuring you receive the very best advocate for the task, whilst at the same time not being financially penalised. She is a respected and long standing member of the legal profession.

Jaimee-Lee Holstein

Head Law Clerk
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Currently in her penultimate year of a dual degree in Law and Arts, Jaimee-Lee is a high achiever who has obtained an Academic Award of Excellence for each year of her studies. She has been with Williamson & Associates in her capacity as a paralegal for two years and dealt with a wide range of legal matters, assisting in Supreme Court and Federal Court litigation. She is passionate about justice, fairness and the protection of basic rights. As such, she has a strong interest in Criminal Law and believes everyone is entitled to have the merits of their case defended before the Court.

Justin Sibley

Principal Solicitor
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Justin brings a depth of expertise and experience in Criminal Law, Terrorism Law, Diplomacy, Security and Intelligence. He was admitted as a Barrister in 2001, while still in the Queensland Police Service. He practiced as a Barrister until recently being invited to lead Williamson and Associates Lawyers Criminal Practice. He provides forthright advocacy and international consulting services.
Starting with a career in operational policing and culminating in criminal investigative squads, Justin Sibley went on to work with the Department of Foreign Affairs and Trade as a specialist Counter Terrorism Officer, with postings to the Philippines, Lebanon and Iraq.
Over 20 years he has developed a unique insight into the Australian Criminal Legal system and the Security and Intelligence apparatus at both the domestic and international levels. Having lived and worked in the Middle East as a terrorism specialist, Justin has a unique insight into events in Lebanon, Syria and Iraq. He understands how easily the Australian Government brands Muslims as terrorists, where politics seems to be the primary motivation. He can provide a unique insight into the way in which intelligence is used as evidence in Terrorism cases.
As a former Barrister and specialist advocate, Justin is eager to assist our clients to achieve the best outcome.

Eleanor Wallis


Eleanor Wallis is a Consultant with Williamson & Associates, and has been in practice for over 25 years. Eleanor’s areas of expertise are conveyancing, leasing, business contracts, Wills, Estates and Powers of Attorney. Eleanor lives locally, has flexible working hours and is contactable out of normal business hours – on 0422 919 165.

Lan Quach

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As a specialist property lawyer Lan brings with her over 12 years of experience including conveyancing, leasing, Business sale and purchase transactions, preparation of commercial documents and Wills and Estates. Lan has an empathetic approach to all her clients and listens to all client concerns with sincerity and understanding always giving clients the time to talk through their concerns to reach an optimum outcome for them. She prides herself on her attention to detail and has her matters prepared in advance of the due date for completion, minimising any anxiety a client may experience and leaving them feeling confident they are being looked after by a professional.

Karin Lee

Executive Legal Secretary
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Karin brings to Williamson & Associates almost 25 years of high level corporate executive support. Born and raised in Sydney, Karin attained her Bachelor of Business degree and spent many years working in the magazine publishing industry before becoming a member of Kerry Packer’s private administrative staff, requiring of her a high degree of accuracy, attention to detail and confidentiality. A move to Brisbane saw Karin expand her skill base into real estate administration and marketing before moving into the legal field at Williamson & Associates.