Private Investigators – Private Investigations

Do you have a personal or business concern? Contact us for discreet, confidential and cost-effective private investigations throughout New Zealand.

We have over 100 of collective years as licensed private investigators in Auckland, Wellington, Christchurch and throughout New Zealand.

Voted #1 Private Investigators in Wellington by Top Reviews. The Neill Group (TNG) are widely recognised as experts in covert surveillance, private investigation and intelligence gathering.

Our highly-skilled surveillance and investigation team includes qualified former police detectives, senior police officers and intelligence specialists. Our people know how stalkers, thieves, fraudsters, and scammers think, so they know how to catch them.

We are resourceful and utilise an extensive network of trusted resources and information sources. Our private investigators adhere to a strict code of ethics and professional standards. We comply with the New Zealand private investigators code of conduct.

Our private investigators are police vetted and licensed by the Ministry of Justice (PSPLA) to deliver surveillance and private investigation services anywhere in New Zealand. Our team always operate with the highest level of integrity and professionalism.

Every member of our private investigation team uses ethical methods to find the answers you are seeking. With over three decades of experience as private investigators, we deliver a high-level of service with results that are second to none.

The Neill Group (TNG) difference:
  1. We do not charge for initial consultations.
  2. We respond to your requests with a sense of urgency.
  3. Our investigation assignments are 100% confidential.
  4. Our people are highly-skilled and professionally trained.
  5. We offer our range of services throughout New Zealand.

Wellington's Leading Private Investigators Since 1987.

Not all private investigators in Wellington are equal. As the saying goes “if you think it’s expensive to hire a professional investigator like us, wait until you hire an amateur”.

Dion Neill and his team of licensed private investigators are experts at investigating thieves, fraudsters, online scammers and cheating partners.


Professionally Trained Surveillance Specialists.

Surveillance is a common element in private investigations, criminal investigations, insurance investigations and commercial investigations.

Our surveillance specialists are professionally trained and highly-skilled in managing surveillance operations within a business, workplace or organisation.

Regardless of the situation or challenge you're facing, we have the expertise and experience to help.

No matter where you live or work in New Zealand, we can help. The Neill Group (TNG) operates New Zealand’s largest team of licensed private investigators in Auckland, Wellington, Christchurch and throughout New Zealand. As one of New Zealand’s leading providers of specialised security, risk management and private investigation services, our resources and operational capabilities are unmatched.

Fraud, theft and workplace dishonesty

Do you have an unexplained loss in your business? Do you suspect fraud or theft in your business, workplace or organisation? Investigating employee theft is best left to the professionals. Fraud or theft inside a business or organisation frequently occurs through a lack of internal processes, which opens a window of opportunity for trusted employees to carry out act of dishonesty.

We are widely recognised as the experts at the detection and investigation of theft, fraud or criminal behaviour. The evidence provided by our private investigators can be used for the basis of a criminal prosecution or legal proceedings (civil and criminal).

Sensitive private and personal matters

Do you suspect your spouse or partner of cheating? Is your former partner not adhering to child custody arrangements? Are you being stalked or feel unsafe? We carry out inquiries regarding child custody issues and sensitive domestic related matters. Are you concerned about your child or family member who is keeping bad company? We provide a range of surveillance and investigation services relating to the wellbeing of children and young people.

Our private investigators are experienced at covert operations (working undercover). Using traditional and electronic strategies, they can detect harassment, unlawful acts, criminal activity and other types of unacceptable behaviour.

I.P., copyright and trade mark protection

We investigate the infringement of I.P., copyright and trade mark patents. We can assist help you to safeguard the integrity of your brand or company’s reputation. Dion Neill has carried out investigations for global companies, including: Nike, Adidas, Armani, Microsoft, Playboy, World Cup and Sony PlayStation.

Insurance claim validations

Dion Neill was one of the first private investigators to carry out assignments on behalf of the Accident Compensation Corporation (ACC). Insurance claims can amount to substantial amounts of money, which often requires further inquiries before compensation is made. A private investigator can assist help you to confirm the validity of insurance claims or to investigate a claimant who is suspected of misrepresenting the facts.

Drugs, alcohol and substance abuse

Do you suspect your partner, family member or employee of taking drugs or using illegal substances? Substance abuse, including drugs and alcohol is known to be the foundation for criminal activity and other anti-social behaviour. We also investigate cyber (internet) bullying and harassment, which could be affecting you or someone you know.

If you suspect someone close to you is the victim of physical or psychological abuse, our private investigators will provide the evidence that you need. We can also help to mitigate any risk to family members.

Business and commercial protection

We offer business owners and commercial clients a comprehensive investigation service to gather evidence and safeguard their business interests. Our modern technology and formidable experience enable us to take on every type of investigation assignment. As a client, you are our first priority and recovering losses on your behalf is one of our key objectives.

We obtain factual information and evidential statements from witnesses, offenders and employees. An experienced private investigator can assist you with any concern, including criminal activity and misconduct cases. We investigate with professionalism, keeping your people, assets and reputation safe.

Nationwide and international tracing

We use proven investigative techniques, including data mining, to gather information on the whereabouts of a missing (or hiding) person. Depending on how much information you have, and how long the person of interest has been gone, tracing a missing person can happen much faster than you think.

Of course, some assignments are more challenging. When a missing person case is not a simple database job, it may take significantly more effort to locate them. We have a solid track record of successfully locating people anywhere in New Zealand and internationally. We assist charities on a pro bono basis to trace birth parents and family members.