The Neill Group operates the largest network of reputable nationwide field agents, private investigators, surveillance specialists, security professionals and process servers (legal document servers) from Kaitaia to Bluff. We are Wellington’s longest serving agency with decades of experience providing security, private investigation, risk management, para-legal support and professional field services in Wellington and throughout New Zealand. 

A number of our licensed private investigators in Wellington and throughout New Zealand are qualified former police detectives, military specialists and security intelligence officers with many years of operational experience at the frontline. 

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Our Story

The Neill Group was founded by Dion Neill who has been operating in the security industry as a licensed private investigator and security professional for over three decades. In the 1980’s, Dion was also one of the first private investigators in New Zealand to carry out investigation assignments on behalf of the Accident Compensation Corporation (ACC). Dion is a former member of the emergency services and New Zealand defence forces, he is currently a community based volunteer first responder. 

Dion has over three decades of experience recovering assets, serving legal documents, conducting covert surveillance, managing complex investigations and providing security to the private, commercial and governmental sectors.  Dion is a proud recipient of the New Zealand Defence Service Medal, St John Service Medal and Long Service Award from the Wellington Free Ambulance. Dion has received advanced security, close personal protection and investigation related training, he is skilled in the use of weapons, krav maga, close quarter combat and pre-hospital emergency care.

Dion has achieved the highest credentials in security available in Australasia, he is a former Certified Fraud Examiner with a Diploma of Security and Risk Management along with a Certificate in Investigation Skills from Aotea Training Services, the private training establishment of the Royal New Zealand Police College. In the late 1980’s, Dion was a member of a team employed to investigate a major organised theft syndicate operating within a national business.

As a result of Dion’s evidence, over 25 offenders were convicted in the High Court and a criminal network was disestablished (Dion also survived cross examination by the late Mike Bungay QC). Dion has protected the rich and famous, including Sting, Bardot, Eminem, Jamie Oliver, Tony Hawk, Sir Elton John, Sir Peter Jackson and Film Talent from the Lord of the Rings Trilogy. Dion featured on the highly popular TVNZ series, ‘Private Investigators’ and the TVNZ Breakfast show regarding protecting high profile people in New Zealand.  




Why Us?

  • We are tenacious, professional, results driven and service focused
  • We have over 30 years of genuine experience as field agents, process servers, private investigators and security professionals
  • We are the negotiation experts with decades of frontline experience dealing with the most volatile debtors and evasive defendants
  • We only select the very best people in our industry who are sourced exclusively from the defence forces, intelligence and law enforcement sectors
  • Our agents are your agents, we treat people with dignity, respect and genuine empathy – our field agents, process servers, private investigators and security professionals have a high-level of EQ


We Think Unconventionally & Outside The Square!


Private Investigations

Our licensed Wellington private investigators are typically employed by private, commercial and government clients to investigate workplace theft, complex fraud matters and sensitive personal issues, including the tracing of missing family members, covert surveillance and confirming suspicions of infidelity (cheating partners).

We carry out a range of private investigation services in the greater Wellington region, we use contracted qualified former police detectives and specialists from the military and intelligence sectors. Our licensed private investigators are discreet, resourceful and committed to achieving the best possible outcome for every client regardless of size or stature. We have the experience to meet your investigation requirements in the Wellington region or anywhere in New Zealand.  


Legal Document Serving 

Process Serving (Legal Document Serving) – We provide cost-effective serving of divorce applications, court proceedings and legal documents, including summonses, demand notices, trespass notices and other time-critical documents in Wellington and throughout New Zealand.

Dion Neill is authorised to serve New Zealand court proceedings pursuant to Section 25(1) of the summary proceedings act 1957. As a process serving agency, we are approved to serve charging documents (criminal proceedings) on behalf of law enforcement and government agencies.

With time sensitive legal documents and a fast approaching court deadline, you need a process serving team that you can rely on to get the service completed, quickly and diligently. Our dedicated process servers throughout New Zealand will provide you with constant communication throughout the entire process, your instructions are managed with the strictest confidence.


Field Services

Field Visits – A personal visit by a professional field agent is an effective method to engage with debtors and to ensure compliance of legal or contractual obligations. Our nationwide field team can verify information, locate hidden assets and detect credit fraud or identity theft.

A key to our success is a structured process utilising professional field agents who are “street savvy” and commercially astute with the ability to communicate with people at every level.

Our field agents possess the experience to deescalate conflict and negotiate a solution that will work for you. We are engaged to assist organisations in the field to interact with people who respond best to a personal field visit, including people with addiction or mental health issues. We have worked in sensitive environments that require additional care because of potential brand or reputation damage.  


Tracing Services

Skip Tracing – Difficulty locating a debtor, defendant or family member? We can help! We have an extensive network of licensed private investigators with decades of experience locating missing people. Our methodologies, confidential sources and unbeatable tracing experience allows us implement appropriate methods to obtain information that can assist with the service of legal documents and debt collection efforts.  


VIP & Executive Transport 

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

A number of our VIP and executive drivers are also trained in providing executive protection and personal protection. Our vehicle fleet of modern motor vehicles enables us to transport 1 to 12 people in style from a V8 Mustang to 5 Series BMW’s and Mercedes Benz luxury coaches. Through our associate network, we can assemble a number of European luxury vehicles for your use anywhere in Wellington or throughout New Zealand.  


GuardHire – Professional Security

Protective Services Limited is a licensed Wellington based security company with a team of high-level security guards, crowd controllers, personal protection agents and risk management specialists.

Protective Services not only provides highly-trained and experienced licensed security guards, we have earned an excellent reputation for providing a market leading personal protection for VIP’s, celebrities, executives, film talent, music artists and international sports teams.

Security Guards – Protective Services launched Wellington GuardHire to satisfy demands for a reliable, accountable and professional security guard provider. Our highly-trained team of security professionals will protect your assets, people and infrastructure.  


Professional Memberships

Dion Neill was a foundation and executive member of the New Zealand Institute of Professional Investigators (NZIPI) until his resignation in 2020. Dion is a current member of the following professional organisations:






International Alliance Partners

We have established international alliances with experts in the private security, intelligence and investigation sectors. Our alliance partners allow us to meet our clients needs irrespective of location, we provide an optimum solution in New Zealand or anywhere in the world.  


Client Confidentiality  

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


Government Licensing

The Neill Group only engages contractors (agents and associates) for security, private investigation and repossession assignments who hold a current certificate of approval or licence issued by the Ministry of Justice (Private Security Personnel Licensing Authority).

The Neill Group and Protective Services are Ministry of Justice – PSPLA (Private Security Personnel Licensing Authority) approved trading names of Dion Neill. Protective Services Limited was granted a company licence to provide security, risk management and private investigation services.  


Community Support 

As a proud New Zealand owned and operated business, we are committed to supporting our community and believe in paying it forward. The Neill Group and Protective Services proudly supports a number of community based charities and non-profit organisations, including: St John, Starship, Life Flight Trust, Wellington Free Ambulance and Ronald McDonald House (Wellington).Dion Neill is a qualified ambulance officer and volunteer first responder with over 40 years of service to St John, GoodSAM and the Wellington Free Ambulance.  


Code One provides qualified event Medics within the greater Wellington region and throughout New Zealand. Code One has a number of Paramedics and EMT’s (Emergency Medical Technicians) available to provide emergency care at any public event or private function. Code One has also provided medical teams for Music Artists, Film Talent and visiting International Celebrities.

Our highly skilled Medics have decades of front line experience with St John or the Wellington Free Ambulance. All of our contracted EMT’s and Paramedics must provide an authority to practice (ATP) prior to engagement or have gained a recognised qualification to provide first aid coverage. Providing qualified Medics and professional security teams will assist to mitigate and manage any risk to your public event or private function.


Serving Wellington & New Zealand Wide 

The Neill Group is a Wellington based agency with the largest network of licensed field agents, private investigators, security professionals, intelligence specialists, surveillance operatives and process servers (legal document servers) in every area and 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.