NEW ZEALAND's Leading FIELD AGENTS, PRIVATE INVESTIGATORS, security professionals & legal Document servers SINCE 1987.

The Neill Group (TNG) is New Zealand's most experienced nationwide provider of field agents, private investigators, security professionals and legal document servers. 


We have spent more than three decades establishing a robust reputation in the private security and investigation market. Everything we do is backed up by an unparalleled level of expertise, experience and recognised credentials. 

Field agents

A personal visit by a professional field agent is a proven method to ensure compliance with legal and contractual obligations. The Neill Group provides a range of professional field services, including audits, surveillance, repossessions, asset recoveries and the investigation of dishonesty offences.

Private investigators

Our nationwide team have significant experience with investigating a range of private, criminal and commercial matters. We are highly proficient with investigating dishonesty in a business or personal relationship. Our objective is to reveal the truth and deliver the facts, so you can make an informed decision without guesswork or a lengthy game of deception. 

Security professionals

Our associates at Protective Services are challenging the security industry's status quo by raising the benchmark for service delivery and professional standards. For more information, please visit Protective Services - Professional Security.

Process servers (legal document servers)

Our nationwide document serving team are ready to take on any challenge and work assiduously to deliver your legal documents and court proceedings, on time and with respect. With hundreds of documents served across New Zealand every year, you can be confident that we will deliver your legal documents on time, every time! 

At The Neill Group, everything we do is backed up by an unparalleled level of expertise, experience and recognised credentials.

Private investigation

As one of New Zealand's leading security and private investigation agency's, we have licensed private investigators readily available in Wellington and throughout New Zealand.

Our high-calibre and professionally trained private investigators are always ready to help clients with challenges involving dishonesty and sensitive personal issues.

Our qualified former police detectives and surveillance specialists are discreet, resourceful and committed to achieving the best possible outcome.

You can trust us to work on resolving your concerns, quickly and cost-effectively towards a resolution. As the saying goes, "if you think it's expensive to hire a professional, wait until you hire an amateur!"

Process serving

Are you searching for someone to personally serve your court documents or dissolution of marriage (divorce) application in New Zealand? We can help. 

We have been serving legal documents, court proceedings and dissolution of marriage (divorce) applications in Wellington and throughout New Zealand since 1987.

We operate the largest network of nationwide process servers (legal document servers). Our people provide you with updates using real time technology, live from the field.

With time-sensitive legal documents and a fast approaching court date, you need an experienced process server you can rely on. Our nationwide process servers will serve your documents on time, every time! 


Field services 

A personal visit by a professional field agent can ensure compliance of legal or contractual obligations.

Our nationwide team of field agents are experts in tracing debtors, auditing floorplans, verifying information, recovering assets and investigating scams, fraud or dishonesty.

We operate with discretion and care in  sensitive environments with a high degree of diplomacy and professionalism to minimise potential brand or reputational damage.

Our field agents possess the experience to de-escalate conflict and negotiate a solution that works for you.

We will only carry out repossession type activities on behalf of major banks and reputable financial institutions. 

Worldwide tracing 

Do you need to locate a debtor or defendant? Are you wondering how to find a missing person? Through our extensive network of licensed private investigators, we have decades of experience with locating missing people.

Our proven tracing methodologies and confidential sources allow us to implement appropriate methods to obtain information that can assist with the serving of legal documents and debt collection efforts.

The Neill Group’s nationwide and international tracing services are utilised by legal clients and government agencies for the purpose of locating clients, debtors, witnesses and defendants named in court proceedings.  

Executive transport 

Our professionally trained drivers are police vetted, and NZTA licensed. We can access immaculately presented high-quality European motor vehicles.

A number of our drivers are trained in providing security and personal protection (bodyguard) services. Our fleet of modern vehicles enables us to transport you in style. From a V8 Mustang or 5 Series BMW to a Mercedes Benz luxury coach, almost anything is possible.

We can assemble a number of European luxury vehicles for your use anywhere in Wellington or throughout New Zealand. Talk to us about our discreet VIP chauffeur service. 

Professional security 

Our associate Protective Services Limited is a Wellington-based licensed security company with a team of professionally trained security personnel.  

In addition to high-calibre security guards, Protective Services provide specialised security (personal bodyguard) for executives, celebrities, film talent and music artists. 

Protective Services will provide a security solution to safeguard your people, assets, events and infrastructure.

For security and bodyguard services, visit Protective Services online. 

Protective services sercurity guard

Event medics 

Our associates at Code 1 provide event medics within the greater Wellington region. Access to qualified medics will help you minimise the risk to your public event or private function. 

Talk to us about our event safety, paramedic and security package, it's the simplest way to mitigate all your risks. Please visit Code 1 online at Code 1 - Event medics.  

New Zealand & Worldwide 

The Neill Group is a Wellington based agency with the largest network of field agents, process servers, private investigators and security professionals in every region of New Zealand, including:

Northland, Whangarei, Auckland, Wellsford, Warkworth, Orewa, Albany, Takapuna, Mangere, Manurewa, Pukekohe, Coromandel Peninsular, Thames, Waihi, Whangamata, Whitianga, Waikato, Hamilton, Te Awamutu, Cambridge, Huntly, Morrinsville, Matamata, Putaruru, Tokoroa, Otorohanga, King Country, Taumarunui, Te Kuiti, Waitomo, Bay of Plenty, Tauranga, Te Puke, Whakatane, Kawerau, Opotiki, Rotorua, Taupo, Turangi, Murupara, East Cape, Gisborne, Tolaga Bay, Tokomaru Bay, Ruatoria, Te Kaha, Taranaki, Wanganui, New Plymouth, Stratford, Hawera, Waitara, Inglewood, Manawatu, National Park, Waiouru, Taihape, Palmerston North, Marton, Bulls, Feilding, Ashhurst, Foxton, Horowhenua, Levin, Otaki, Kapiti, Waikanae, Paraparaumu, Paekakariki, Wellington, Plimmerton, Porirua, Tawa, Johnsonville, Upper Hutt, Lower Hutt, Wainuiomata, Hawkes Bay, Wairoa, Napier, Hastings, Havelock, Waipukurau, Dannevirke, Wairarapa: Featherston, Pahiatua, Masterton, Carterton, Greytown, Tasman, Nelson, Blenheim, Picton, Motueka, West Coast, Westport, Greymouth, Hokitika, Wanaka, Queenstown, Twizel, Alexander, Te Anau, Canterbury, Christchurch, Kaikoura, Ashburton, Southland, Timaru, Oamaru, Dunedin, Invercargill, Balclutha, Mossburn, Gore.

Protective services sercurity guard

Why us?

  • Many of our associates are former members of the New Zealand defence forces, law enforcement and intelligence community.
  • We operate New Zealand's largest network of nationwide field agents, process servers, security professionals and private investigators.
  • Our people are vetted, police approved and licensed by the PSPLA in New Zealand; we carry out background checks prior to their engagement.
  • We have an established global network of reputable and professional alliance partners who are security, intelligence and private investigation specialists.
  • Our people are widely respected for their tenacity, knowledge and commitment to providing exceptional results with a high-level of service.
  • Dion Neill and his team of licensed private investigators have solved a number of high-profile private, criminal and commercial cases since 1987.

Client confidentiality

Trust is an important element of our client relationships. Our agents and associates must sign a confidentiality agreement prior to deployment on any operational assignment.

Regulatory Compliance  

We comply with all relevant statutory and regulatory requirements, including approval from the New Zealand Police.  The Neill Group carries comprehensive insurance cover, including public liability and professional indemnity.


Government licensing 

We are licensed in New Zealand by the Ministry of Justice - Private Security Personnel Licensing Authority (PSPLA) as providers of security, repossession, risk management, personal protection and private investigation services. 


Community support

We proudly support St John, GoodSAM, Flashlight and Wellington Free Ambulance.

New Zealand made

The Neill Group is approved and authorised to use the New Zealand Made Trade Mark as a trusted mark of authenticity.


Our memberships

We are members of ASIS International, World Association of Detectives and New Zealand Security Association (NZSA).