Brian O'Callaghan

Hyans acts for Commonwealth, State and Territory government agencies and commercial clients on procurement, contracts and public law matters. Hyans advises on commercial contracts, corporate governance, statutory interpretation, legislative drafting, regulatory law, administrative law, privacy and FOI matters, and procurement and probity. His practice covers all aspects of government contracting from strategy and tender design through contract award and administration, as well as legal advice...

Bill has been a legal practitioner for over 30 years specialising in personal injury law including motor vehicle accidents and public liability, workers compensation, medical and dental negligence, and historical child sexual abuse cases. His practice also includes commercial litigation in the ACT courts involving insurance and professional indemnity issues, building and contract disputes, and employment matters. Bill’s straightforward manner complements his extensive experience and kno...

Shelley acts for local and national corporate clients across strata, development, building and construction sectors. Her clients include owners corporations, property developers, contractors, construction companies and corporate entities engaged in disputes and litigation often arising from real estate and construction activity. Shelley specialises in the resolution of corporate governance disputes, commercial and corporate contractual disputes, and residential and commercial construction dis...

Ian has broad experience across diverse jurisdictions and areas of law with a specialisation in commercial litigation, building and construction, and insurance law. He also has experience in professional negligence claims, leasing disputes, and personal injury. Ian is recognised by his peers in The Best Lawyers in Australia list in dual fields of litigation and insurance law. His broad experience, including his regularly acting for both plaintiffs and defendants, enables him to provide a bala...

Jeremy's practice spans work with a range of government and corporate clients. He has acted in claims before the High Court, Federal Court, various Supreme Courts and the Administrative Appeals Tribunal. Jeremy's administrative and regulatory law experience includes: advising Commonwealth agencies in relation to regulatory proceedings, including in relation to options and evidence required for declaratory, civil penalty and injunctive relief in accordance with the Regulatory Powers (Standard ...

Melanie acts for Commonwealth government agencies, statutory entities and corporate clients. Melanie's clients operate across the full spectrum of Commonwealth activity. Her clients include Comcover, ATO and Departments including Finance, Defence, Home Affairs, Industry, Attorney-General's and Agriculture. Melanie joined Thomsons in July 2025 as part of the transition of the one of Australia’s premier Commonwealth government practices. Melanie’s practice spans litigation, dispute ...

Sarah acts for Commonwealth Government departments and agencies on procurement, contracting and governance matters. Her client base is primarily the Commonwealth and Commonwealth entities, with a particular focus on defence procurement and capital equipment acquisition. Sarah advises on procurement activities for aviation, land vehicle and maritime assets, governance matters for statutory corporations, contract negotiations, competitive tendering processes and privatisations. She leads contra...

Andrew has extensive experience in representing and providing high level, strategic and complex workplace relations advice to a wide range of Commonwealth departments and agencies over the last 15 years. This includes significant experience in litigating on behalf of the Commonwealth (generally on the instructions of Comcover) in the Fair Work Commission, the Federal Court, the Federal Circuit and Family Court of Australia, the Australian Human Rights Commission and the Administrative Review ...

Sarah acts for Commonwealth Government agencies and private sector clients on defence and national security matters, export control and regulation, and government procurement. She is part of the firm’s defence and national security practice. Sarah advises on defence and national security legal frameworks, export control obligations under the Defence Trade Controls Act and associated legislation, and government procurement. Her practice spans the legal architecture governing Australia&rs...

https://www.thelawyermag.com/au/news/general/laugh-every-day-says-mills-oakley-partner/228601 Bernice has a broad-ranging commercial-disputes practice, but her specialities are insolvency and debt recovery, shareholder disputes, and building and construction disputes. She is sought out for her sound technical advice, along with her straight-talking and commercially pragmatic approach to protecting the interests of her clients. Bernice has been described as 'formidable and practical', 'a brigh...