About Us

Rosewill Consulting Limited is a young company built on a wealth of knowledge and practical skills sourced through a wide range of consultants. Where we do not have the specific expertise you require, we will refer you to a specialist for that area.

Our goal is to integrate regulatory requirements with sensible business practice to make your business more efficient while meeting its compliance obligations. 

We bring together like-minded consultants who share values of integrity, trust and respect. Our approach is to understand your business needs first, consider options and help you implement solutions that will enable your business to grow and not be constrained by the impact of regulatory change. 

Our Team

Karty Mayne

Director and Compliance Consultant


Karty Mayne has significant experience in risk and compliance, particularly in the financial services sector. In her previous role at the Financial Markets Authority, Karty licensed and monitored a large number of national and international companies to ensure compliance with regulatory requirements in New Zealand.


Her previous roles included Manager, Supervision at the Financial Markets Authority, Head of Risk and Compliance for Guardian Trust, Head of Specialist Services for The Compliance Company and South Island Regional Manager for Public Trust.

Tiana Whitehouse

Compliance Consultant

Derek has held a number of roles within financial services including banking roles with BNZ, Kiwibank and Westpac. Derek has provided frontline financial advice including advice on KiwiSaver, savings & investments, insurance products, mortgages and general lending. Derek was a self employed mortgage broker for 5 years and has previously owned his own company.


Tiana Whitehouse brings both legal and financial markets expertise to the Rosewill team.  In her previous roles at the Financial Markets Authority, Tiana served as the licensing subject matter expert for the Financial Advice Reform project, developed financial markets regulatory policy (including class exemptions and legislation), and licensed and monitored a wide variety of financial services businesses. 


Her previous roles include Senior Adviser (Regulatory Policy) and Senior Adviser (Supervision) at the Financial Markets Authority, Manager in Risk Consulting Advisory at KPMG, and as an attorney at well-known US law firms.

Derek Mayne

Director and Compliance Consultant

Tony Dingwall

Compliance Consultant

Tony is an experienced Compliance Manager and brings over 40 years financial services, trustee industry and regulatory experience. Tony has been involved with developing Risk Assessments and Compliance Programmes under the AML/CFT Act, preparing licence applications and providing compliance reviews for Authorised Financial Advisers for a Qualifying Financial Entity under the Financial Advisers Act. 

© 2018 Rosewill Consulting Limited

P O Box 978, Cambridge 3450, New Zealand.