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Rose Percival


Contact Details

E: Rose Percival Tel: 04 499 9363 Mobile: 027 245 0575

Key skills

  • Leading business and organisational change
  • Improving corporate governance
  • Strategic and operational performance of corporate functions.


Rose is a highly experienced consultant and senior executive. She leads our Business Case practice  and has reviewed all significant business cases written by the Tregaskis Brown team, as well as providing advice on other agencies business cases.  

She has planned and led many programmes of organisational change and has a strong reputation for the quality of her analysis and her ability to produce high quality results under pressure. 

During her varied career in consulting and executive management positions she has been a member of, and chaired, a range of governance bodies.

Rose was previously Deputy Secretary, Organisational Development and Support at the Ministry of Justice and Acting Deputy Commissioner at the State Services Commission.

Rose is a trained Gateway reviewer and holds a Foundation certificate for Better Business Cases with the NZ Treasury and an independent member of the NZ Army Board.


  • Bachelor of Laws, Victoria University of Wellington
  • Bachelor of Arts, Postgraduate Diploma in Arts, University of Otago

Recent Assignments 

  • Whanganui District Health Board - Advice on Organisational Design  
  • Ministry for Primary Industries - Governance workshops for Project and Programme Sponsors 
  • NZ Business Number - Short term structure and governance advice for NZBN, a subsidiary of Ministry of Business Innovation and Employment
  • Department of Internal Affairs - Led and provided Quality Assurance for a review of the current EPMO mandate and structure
  • Ministry for Primary Industries - Acting Programme Director for the establishment of a major infrastructure programme 
  • Eastland Community Trust - Conducted a capability and capacity review for the Trust
  • New Zealand Customs Service - Designed and facilitated governance workshops for four new boards focused on the key strands of a Change Programme.


For general Enquiries

Tregaskis Brown


+64 4 499 9363

Office Location

Level 8, Berl House

108 The Terrace

Wellington 6011

New Zealand

Postal Address

PO Box 25 242

Wellington 6140

New Zealand