After a short and uneventful career as a suburban solicitor, Lindsay was called to the Bar in 1985. He became a Senior Counsel in 2005. He practises principally in Equity and Probate and has appeared in many leading NSW Wills and Estates cases. He frequently lectures barristers and solicitors, and occasionally Judges, on aspects of law and practice. He is an accredited Mediator under the Australian Mediation Accreditation System.
In 2015, Doyle’s Guide listed Lindsay as a leading Senior Counsel in NSW Wills and Estates litigation. In 2016, he became pre-eminent. He is not sure why. In 2017, 2018 and 2019 that status was continued. In 2020, 2021 and 2022, he is the Market Leader.
In May 2016, he delivered the Sir Ninian Stephen Lecture for Equity Trustees Limited.
Lindsay is a former Secretary-General and later Vice President of the Australian Academy of Forensic Sciences, and a longtime member of the Australian Skeptics, the Samuel Griffith Society, the Sydney Institute, the Centre for Independent Studies, and the Goon Show Preservation Society.