About Us

We can help with financial services obligations such as AML/CFT, CCCFA, CoFI, FMCA etc.

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


Derek Mayne

Director and Compliance Consultant

Tiana Whitehouse

Compliance Consultant

Stuart Auld

Compliance Consultant

Karty 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.

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 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.

Stuart is an Authorised Financial Adviser and brings 20 years of investment experience and deep knowledge of each facet of the market. He's held senior positions with Aon, Morningstar, Russell Investments and Tower Managed Funds.


Stuart is well known and respected within the NZ Adviser and Investment community and has served on numerous industry boards and committees.

Liz O'Callaghan

Compliance Consultant

Liz is an experienced project and development manager with experience in financial and insurance services, and health care. Liz has held senior roles in Risk and Compliance teams in Insurance and Financial Services organisation including ANZ and Lumley. Recently Liz has worked with BL Global Markets, a licensed derivative issuer and AIA aligning and integrating the policies and technology systems following the acquisition of Sovereign.

Liz specializes in implementing regulatory change and establishing efficient risk and compliance processes and technology.

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.