Sean acts for clients in a wide range of complex commercial disputes and regulatory matters.  He has particular expertise in company and professional negligence disputes and in representative (class action) proceedings.  He regularly advises and represents clients facing investigations and civil or criminal proceedings brought by the Commerce Commission, the Financial Markets Authority, WorkSafe and other regulators.

Sean has appeared as sole and junior counsel in the District Court, High Court and Court of Appeal. Sean also has experience appearing in arbitrations.

Prior to joining Gilbert Walker, Sean worked for three years in Bell Gully’s litigation department. While at university, Sean undertook an internship abroad at Herbert Smith Freehills in London and tutored contract and tort law.


  • LLB (Hons) / BA (Canterbury)

  • Admitted to the Bar in 2016


  • acting for former directors of Feltex in the liability and loss phase of the $200m class action brought on behalf of more than 3,600 shareholder claimants arising from the Feltex IPO in 2004

  • acting for an investment company that was the victim of a complex multinational fraud

  • acting for defendants facing charges laid by WorkSafe under the Health and Safety at Work Act, including acting for an entity facing charges in relation to the 2019 eruption on Whakaari / White Island

  • acting for a New Zealand subsidiary of an overseas-listed company in the first civil penalty proceeding brought by the Financial Markets Authority under the Anti-Money Laundering and Countering Financing of Terrorism Act

  • acting for Lawyers for Climate Action NZ in its judicial review of the Climate Change Commission

  • acting for a major commercial landlord on a number of property and leasing disputes across its portfolio

  • acting for parties seeking and resisting interim injunctions in a range of disputes

  • acting for lawyers, accountants and other professionals facing civil claims

  • acting for trustees and beneficiaries in a range of trust disputes