Wellington’s Most Trusted Private Investigators – Wellington, New Zealand.

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Dion Neill & The Neill Group (TNG) – Wellington’s Most Trusted Private Investigators Since 1987.

With almost 40 years of private investigation, surveillance and intelligence gathering experience, Dion Neill and his team at The Neill Group (TNG) is Wellington’s most trusted private investigators.

TNG Founder, business owner and PSPLA licence holder, Dion Neill launched his career in 1987 as a process server, security provider and private investigator. Today, he stands as a leading advocate for elevating professional standards and operational benchmarks across the sector. Dion began his career in the New Zealand Defence Forces and emergency services, receiving advanced training from former military, intelligence, and law enforcement personnel.

As a former Certified Fraud Examiner (CFE), he holds a number of recognised credentials in security, investigations, personal protection and risk management. With over three decades of experience, Dion has led high-profile cases across Australia, New Zealand and Pacific Islands. In the late 1980s, he was one of the first private investigators to carry out investigations on behalf of the Accident Compensation Corporation (ACC). Dion served as a surveillance and undercover operative in a major landmark theft case resulting in over 20 High Court convictions.

Following several years as a first responder, Dion managed a team of over 300 frontline security personnel for a large global security company. He was later assigned to provide close personal protection to a prominent individual facing serious threats of violence. In 1996, Dion managed the security for a New Zealand national sports team touring South Africa. Dion and his associates bring global operational experience from some of the world’s most volatile regions, including Asia and the Middle East.

Recognition

Dion was awarded with the New Zealand Defence Forces Service Medal, St John Long Service Medal, and Wellington Free Ambulance Long Service Award.

Professional Credentials

Investigation Certifications: Certificate in Investigation Skills (Royal New Zealand Police College), Certificate in Professional Investigations (C4 Group), Former Certified Fraud Examiner (CFE – Association of Certified Fraud Examiners).

Security, Investigation & Risk Management Certifications: Level IV Certificate in Security Operations (Australia) & Diploma of Security and Risk Management (Australia), NZQA National Certificate in Security – Level IV (Including Personal Protection), Certificate in Providing Executive Protection (USA), Executive Protection (Alan Kinnane & Associates), Certificate in Professional Investigations (C4 Group).

Finalists – New Zealand & Global Security Awards

New Zealand Security Awards: Finalist in 2021 and 2024 for Outstanding New Product or Service of the Year.

Outstanding Security Performance Awards (OSPAs): Finalist in 2022, 2023, and 2024 across categories including Outstanding Contract Security Director, Outstanding Security Consultant, and Outstanding New Security Product.

Note: The OSPAs are prestigious, independent global awards designed to recognize and celebrate exceptional performance, innovation, and ethical practices within the security sector.

Why Dion Neill and his team at The Neill Group (TNG)?

For almost 40 years, Dion Neill has served the city of Wellington with integrity, professionalism and tangible results. Dion’s success is driven by referrals, not advertising. We expertly navigate your most sensitive, critical issues with complete confidentiality.

Local Roots, Global Reach

Wellington Expertise: Deeply rooted in Wellington, New Zealand’s capital city, understanding its people and layout.

Strategic Advantage: Decades spent building an unparalleled local knowledge base.

Broad Network: Reliable contacts stretching across New Zealand and international channels

Wellington’s Most Trusted Private Investigators – Government (PSPLA) Licensed Private Investigators Since 1987.

Why Choose Dion Neill & The Neill Group (TNG)?

🛡️ A Reputation Built on Trust

We do not rely on advertising or clever marketing. For almost 40 years, our private investigation business has been built entirely on word-of-mouth referrals from clients who demand integrity, discretion, and results.

📍 Local Roots, Global Capabilities

We are based in Wellington, our Private Investigators reside in Wellington, Our Wellington Private Investigators know the capital city, its surrounding regions, and its people. We back this deep local knowledge with a network of carefully vetted Wellington Private Investigators, intelligence and information sources across New Zealand. It’s important the Private Investigator that you have selected is a resident of the actual city or suburb where the investigation is required.

(Example: Our Auckland Private Investigators reside in Auckland, our Christchurch Private Investigators reside in Christchurch, our nationwide team of Private Investigators are situated in every area and region from Kaitaia to Bluff).

⚖️ Courtroom-Ready Precision

Our surveillance, private investigation and intelligence gathering team consists of qualified former Police Detectives and Government Intelligence Specialists. This high-level of law enforcement experience guarantees a rigorous standard of evidence gathering that meets strict legal requirements, setting us apart from many of our competitors.

Comprehensive Expertise for Legal, Commercial & Sensitive Private Matters

🏛️ Criminal Defence & Legal Support

We provide robust investigative backing for both legal aid and privately funded criminal defence counsel. Our qualified former New Zealand Police Detectives specialise in analysing prosecution files, evaluating disclosure documents, and assisting with New Zealand District, Family and High-Court preparation.

💍 Suspected Infidelity & Matrimonial Investigations (Cheating Partners)

Gain absolute clarity and peace of mind. We handle deeply personal domestic investigations with the utmost empathy, sensitivity, and professional discretion.

🏢 Workplace Theft, Fraud & Dishonesty Investigations

Protect your business or organisation from internal threats including theft, fraud and dishonesty. Our confidential workplace and commercial investigations swiftly identify the employees or contractors responsible and secure the airtight evidence required for a swift resolution including prosecution or legal proceedings.

👶 Child Welfare & Care Investigations

Your children’s safety and well being is non-negotiable. If you have serious concerns regarding your care provider or custody arrangements, our Private Investigators will gather the facts needed to protect them.

📜 Professional Legal Document Serving (Process Serving)

Not only are we Private Investigators, we are also Process Servers (Legal Document Servers). Our process serving team will professionally serve your legal documents, court proceedings and dissolution of marriage (divorce) applications with a sense of urgency, keeping your information private at all times.

Absolute Discretion When It Matters Most

Hiring a private investigator is a sensitive decision. We understand the weight of what you are facing. Our absolute commitment to professionalism, strict ethics, and total confidentiality ensures your peace of mind from day one.

Why Clients Trust Us

Choosing a Wellington Private Investigator, Auckland Private Investigator, Christchurch Private Investigator or New Zealand Private Investigator means entrusting someone with your most private, sensitive and confidential information. Clients choose The Neill Group (TNG) because our founder, Dion Neill and his highly-skilled team of Private Investigators throughout New Zealand hold themselves to the highest ethical, legal and professional standards in the industry.