Sean O'Donnell

George Inatey KC is a top attorney recognized by Best Lawyers in the practice area(s) of Construction / Infrastructure Law. George, who practices law in Sydney, Australia, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which George is held by other top lawyers in the same geographic and legal practice area.

Joanne Kinslor is amongst Australia’s foremost immigration lawyers. She is known for both her extensive experience throughout the field of immigration law and her thought leadership. Her clients appreciate her dedication to addressing complex immigration issues and winning difficult cases. Joanne has been accredited as an immigration specialist by the Law Society of New South Wales since 2006. There are fewer than 60 accredited immigration solicitors in New South Wales. Joanne is an act...

Arthur has specialised in the aged care and retirement village industry since 1995, and joined Thomson Geer as a partner in April 2018. Arthur holds degrees in both accounting and law. This background in corporate and tax allows him to advise on all aspects of the structuring, acquisition, disposal, development and operation of aged care, assisted living and independent living retirement living environments. He also provides assistance to approved providers and operators of seniors living fac...

Warwick Gilbertson is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Warwick, who practices law in Newcastle, Australia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Warwick is held by other top lawyers in the same geographic and legal practice area.

Helen Tieu is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Professional Malpractice Litigation. Helen, who practices law in Sydney, Australia, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Helen is held by other top lawyers in the same geographic and legal practice area.

Michael was called to the Bar in 2005 and was appointed Senior Counsel in 2019. He has a wide practice, specialising in the areas of revenue law, commercial law, Corporations law and public law. Michael acts for a diverse range of corporate, private and government clients. He frequently appears both for and against the Commonwealth and its regulatory agencies, including the Commissioner of Taxation, the Australian Competition and Consumer Commission and the Australian Securities and Investmen...

John has over 20 years’ experience as a litigator specialising in all areas of insurance and has managed a significant number of large litigated matters. John is an Accredited Specialist in Commercial Litigation (Insurance) and leads our insurance team. He has acted in matters in all States of Australia. John is an experienced advocate, regularly appearing for clients in court and participates in alternative dispute resolution programs in those matters identified as unsuitable for litig...

Tamara is briefed in a wide range of commercial and public law matters, with a focus on complex revenue, regulatory and planning and environment cases. She appears both led and unled, at first instance and on appeal in New South Wales and Federal courts, as well as in tribunals and inquiries. In addition to advocacy, Tamara’s practice involves opinion and advisory work for corporate and government clients. Tamara has been recognised in Doyle’s Guide as a leading junior counsel in ...

Adam Casselden SC is a top attorney recognized by Best Lawyers in the practice area(s) of Sports Law and Transportation Law. Adam, who practices law in Sydney, Australia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Adam is held by other top lawyers in the same geographic and legal practice area.

Sarah Wood is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Labour and Employment Law. Sarah, who practices law in Sydney, Australia, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sarah is held by other top lawyers in the same geographic and legal practice area.