Brian O'Callaghan

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...

Keith is a Director in the Estates and Estate Planning Section and brings more than 40 years’ experience in legal practice. An active member of the legal community in Canberra, he is regularly asked to lecture on various aspects of estate planning including charitable trusts, special disability trusts, succession planning, superannuation and family provision claims. He is a member of the Financial Planning Association Australia, a Member of the Society of Trust and Estate Practitioners ...

Paul acts for Commonwealth Government agencies, statutory authorities and private sector employers. Paul joined Thomsons in July 2025, bringing with him deep Commonwealth client relationships built over an extensive career. Paul’s practice spans all aspects of employment and industrial relations, WHS governance, administrative law and government procurement. He advises on enterprise bargaining, individual and collective workplace agreements, discrimination complaints, investigations of ...

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 ...

Georgina Adams is a lawyer recognized by Best Lawyers in the practice areas of Commercial Law, Corporate / Governance Practice, Government Practice, Information Technology Law, Outsourcing Law, Public Law and Telecommunications Law. Georgina practices law in Canberra, Australia Best Lawyers has recognized Georgina Adams since 2014. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the profes...

Mark has practised the full spectrum of business and corporate law for more than 34 years. He is one of the firm’s founding name Directors and is a NSW Law Society Accredited Specialist in Business Law. His practice concentrates on the areas of contract and commercial law, contract negotiation and drafting, as well as enforcement and compliance strategies. His practice has involved all manner of business-related matters, ranging from advising on the placement of high-end Cray computers ...

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 ...

Lauren Armstrong is a lawyer recognized by Best Lawyers in the practice area of Insurance Law. Lauren practices law in Canberra, Australia Best Lawyers has recognized Lauren Armstrong since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Lauren Armstrong is held by other lawyers.

As Legal Director of the Planning, Environment and Local Government team Alice provides skilled and professional advice and representation for local government and private clients on a wide range of NSW and ACT planning, environmental and administrative law matters. Alice is a pragmatic and practical problem solver who works in partnership with her clients to deliver ‘on ground’ results. She enjoys providing strategic advice on how best to achieve her client’s goals, and spe...