Brian O'Callaghan

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 ...

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...

Angela acts for Commonwealth Government agencies and departments across technology, procurement and contracting matters. Her clients include Defence and other major Commonwealth entities. Angela advises on Australian Government procurement, information and communications technology contracts, software development and licensing, data protection and privacy, business process outsourcing, IP licensing, technology commercialisation and Defence infrastructure projects. She advises on all phases of...

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...

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 ...

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.

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 ...

Elissa acts for Commonwealth government agencies and entities, universities and private sector organisations on employment, workplace relations and safety matters. Her focus is public sector employment and workplace relations. Elissa advises on enterprise bargaining (including drafting, strategy, industrial action and approval challenges), employment litigation (general protections, unfair dismissal, discrimination and bullying), workforce planning and reform, misconduct and underperformance ...

Matthew has over 18 years experience in insurance litigation and specialises in defending state statutory class and common law claims arising in the challenging Australian Capital Territory jurisdiction. He regularly assists insurers and self-insurers to liaise with the ACT regulator on issues concerning the ACT scheme. Matthew is highly experienced in the defence of state statutory classes litigation and uses his knowledge to assist clients with strategic claims management in order to achiev...