Royden is a highly experienced arbitrator and construction adjudicator.


  • LLB (Hons) - University of Canterbury, 1982
  • LLM - University of Cambridge, 1985
  • FAMINZ (Arb), 2002


Royden is an experienced arbitrator and construction adjudicator.

He was a litigation partner at Simpson Grierson before moving to the bar in 1996. In 1999 and 2000 he acted as Counsel Assisting in the Gisborne Cervical Screening Inquiry. He became a Fellow of the Arbitrators’ and Mediators’ Institute of New Zealand (AMINZ) in 2001.

From 2002 to 2011 Royden was Chair of the Human Rights Review Tribunal. The Tribunal has amongst its powers a power to declare primary legislation to be inconsistent with the anti-discrimination rights in the New Zealand Bill of Rights Act.

Since returning to practice in 2011 Royden has been engaged as arbitrator, mediator and construction adjudicator in a wide variety of commercial matters. He is a member of both the Mediation and Arbitration Panels of AMINZ, and was a Council member from 2012 to 2020 (Royden was President of AMINZ from 2018 to 2020).

Royden is also a Principal Arbitrator, Evaluator & Mediator with the New Zealand Disputes Resolution Centre, and a Resolution Institute-accredited mediator. He teaches Arbitration at AUT University.


For a short form of arbitration agreement adopting the provisions of the Arbitration Act 1996, visit Royden is also available to arbitrate on any of the forms used by the New Zealand Disputes Resolution Centre which can be found at

Construction Contracts Act Adjudication

Royden accepts appointments as adjudicator either directly or through the New Zealand Building Disputes Tribunal – see

Due to pressure of my determinative and adjudication work, I have discontinued my practice as a mediator for the present.

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  • Arbitrators' and Mediators' Institute of New Zealand
  • New Zealand Disputes Tribunal
  • New Zealand Dispute Resolution Centre
  • Resolution Institute
  • Society of Construction Law
  • NZ Bar Association
  • Legal Research Foundation