wellington's leading PRIVATE INVESTIGATORs since 1987

Are you concerned about abuse, fraud, theft or relationship dishonesty? Our experienced private investigators can help.


Dion Neill and his associates have been investigating thieves, scammers, fraudsters, and cheating partners in Wellington since 1987. Dion is Wellington's longest-serving private investigator, surveillance specialist, and security professional. A number of our private investigation teams in Auckland, Wellington, Christchurch, and throughout New Zealand are former detectives, police officers, and intelligence specialists. They know how thieves, fraudsters, and scammers think, so they know how to catch them. Dion has developed a unique ability to uncover the truth, seek out the answers, gather intelligence, and deliver information.

Tired of smoke and mirrors? Do you want to know the truth?

Our private investigators (often referred to as private detectives) leave no stone unturned. Our investigators have an extensive knowledge of people, places and information caches which are used during the course of investigations. It is our obligation to always pursue our clients legitimate interests within the law. Unscrupulous behaviour is not worth the risk to our licence, integrity or reputation, we always strive to promote the highest ethical and professional standards. We have over three decades of experience investigating abuse, fraud, theft, dishonesty, harassment and everything in between.

Our team focus on delivering the right solution, service and information to provide clarity, certainty and most importantly, peace of mind.


Private Investigations         

Is your former partner not respecting child custody arrangements? Are you being stalked or harassed? We carry out inquiries regarding child custody issues and other sensitive matters (e.g. non-compliance of a court order or carrying out harassment activities).

Are you concerned about your child or a member of the family who is keeping bad company? We provide a range of investigation services relating to the wellbeing of children and young people.

Our private investigators are experienced at covert operations (undercover). Using traditional and electronic strategies, including social media to detect harassment, unlawful acts, criminal activity or other anti-social and  unacceptable behaviour.

Trade Mark Investigations    

Our private investigators are often instructed by legal firms and business clients to investigate the infringement of branding, copyright and trade mark patents.

We also investigate the unauthorised use of logos and theft of intellectual property. We carry out test purchases and surveillance to gain the evidence required. 

Dion Neill has personally carried out investigations for global companies, including: Nike, Adidas, Armani, Microsoft, Playboy and Sony PlayStation.

Wherever you’re based in New Zealand or the world, we can help you to protect the integrity of your brand and the reputation of your business or organisation.

Drug & Abuse Investigations      

Are you concerned your spouse, partner, family member or employee is consuming excessive alcohol, taking drugs or using illegal substances? We can help. Substance abuse, including drugs and alcohol, are known to be a foundation for anti-social behaviour.

Online bullying and harassment has increased over the past decade. We investigate cyber (internet) bullying and physical harassment, which could be affecting you or someone you know. We can help protect you and your family.

Are you or someone you know a victim of physical or psychological abuse? Let us help, we have the resources to mitigate any risk to the safety and well being of employees, family members or any person at risk. 

Insurance Claim Investigations     

Dion Neill is a former Certified Fraud Examiner. In the 1980s, Dion was one of New Zealand's first private investigators to carry out investigation assignments on behalf of the Accident Compensation Corporation (ACC).

Dion and his team have been successful in detecting and investigating claimants who have acted dishonestly to gain a personal or financial advantage.

Our fraud investigation specialists can assist you to confirm the validity of insurance claims or to investigate a claimant who is suspected of misrepresenting information. 

Injury and disability insurance claims can amount to a substantial amount of money. We urge insurance companies to validate claims before any compensation is made.

Dishonesty Investigations 

Do you suspect theft, fraud or offending inside your business? Do you suspect dishonesty within a personal relationship? We have over three decades of front line experience investigating various forms of dishonesty. 

We know that theft, fraud and other dishonesty inside a business frequently occurs through a lack of internal processes and procedures, which opens a window of opportunity for people in positions of trust.

We can provide the evidence to support a complaint to Police or civil legal proceedings. We have been widely recognised as 'expert witnesses' in matters before the Courts.  

You deserve peace of mind. Our investigation team will uncover the truth and deliver the facts so you can make informed decisions. 

Surveillance & Covert Assignments

The Neill Group team includes a former government intelligence specialist who is extensively trained in covert surveillance and undercover operations. Our qualified specialist has significant experience working in highly complex and sensitive environments.

Covert surveillance is a powerful tool that is often used to support criminal, commercial and private investigations, including the investigation of infidelity (relationship dishonesty). It can also be used to obtain evidence for a criminal prosecution.

Our experience has proven that crucial intelligence can be gained from a well managed and structured undercover and surveillance operation with a clear goal and objective. Contact us for information on our specialised investigation services.