The Neill Group is a highly experienced multi-service agency based in Wellington with a network of associates throughout New Zealand selected from the defence forces and emergency services. The Neill Group provides a range of nationwide professional services including: private investigation, specialised security, risk management, document serving and paralegal support.

The Neill Group is owned and operated by Dion Neill. The Neill Group operates one of New Zealand’s most extensive nationwide networks of licensed private investigators, security specialists, process servers and field agents covering every district and region of New Zealand.

The Neill Group are committed to:

  • Providing ethical and professional specialised services in New Zealand
  • Deploying astute, skilled and experienced nationwide associates of the highest caliber
  • Ensuring client confidentiality is respected and maintained at all times
  • Managing a continual review of standard operating procedures and processes
  • Complying with all relevant legislation, including the Private Security Personnel and Private Investigators Act

Our professional nationwide services include, but not limited to:

Private Investigations 

As a licensed private investigator, Dion personally carries out all commercial and private investigation assignments in the Wellington region. Dion is a highly experienced and qualified private investigator who is supported by a nationwide network of private investigators, forensic experts, fraud examiners and surveillance operatives throughout New Zealand and worldwide.

Dion has been operating as a licensed private investigator, security specialist and legal process server in New Zealand since 1987. Dion has achieved a number of recognised qualifications along with significant experience in providing investigative services including covert surveillance, undercover operations and the investigation of workplace theft and fraud related matters.

Our New Zealand and international network of private investigators and security specialists have decades of experience uncovering the facts and revealing the truth so clients can make informed decisions.

New Zealand Document & Legal Process Serving 

The Neill Group serves all New Zealand legal documents and international legal process, including district court, family court and high court legal proceedings along with dissolution of marriage (divorce documents), court summonses, demand notices, trespass notices, subpoenas and other time-critical documents that require personal service by a legal process server.

Our high-caliber process servers in the Wellington region and across New Zealand serve legal proceedings and documents on behalf of government departments, law enforcement agencies, legal firms, debt collection company’s and private individuals.

The Neill Group are widely recognised as New Zealand’s leading process serving agency with over three decades of experience serving legal process in the greater Wellington region and throughout New Zealand.

The widespread nature of our document and legal process servers allows us to have a detailed knowledge of local geography and the individuals who are the subject to legal proceedings, this important insight provides a beneficial edge in carrying out your instructions with a high degree of efficiency using many years of gathered intelligence.

Field Agent Services 

The Neill Group provides a range of professional nationwide field services, including: asset recoveries (repossessions), commercial evictions, debtor interviews, field visits, address confirmations, background checks, floor plan audits and the verification of financial data for a number of New Zealand’s leading commercial and financial institutions.

A visit by a professional field agent has proven to be an effective way to re-engage with debtors to ensure compliance of contractual and legal obligations. Our nationwide field agents communicate effectively with people in our community who respond best to a personal visit, including habitual debtors, multi-cultural clients and people with disabilities, addiction or mental health problems.

Dion and his nationwide associates have many years of experience managing sensitive issues that require a high level of care because of potential damage to a clients brand or reputation. In some cases, clients or debtors are unable to be contacted by telephone or by post, the best solution is a visit to their last known address or a discreet visit to their workplace.

Field visits are a powerful tool when assessing an individuals personal or financial circumstances that are subject of potential debt recovery or to enable clients to make informed decisions based on accurate information provided by a field agent or private investigator.

Specialised Security & Risk Management

Dion Neill operates Protective Services, a high-level private security and risk management agency. Dion is supported by a network of security specialists throughout New Zealand sourced exclusively from the police and military. Dion’s people are also deployed to provide specialised security at public events, movie premiers, corporate meetings, weddings and private functions.

Protective Services launched a personal protection service after Dion provided security to celebrity chef, Jamie Oliver and Bardot from the Australian television series, ‘Popstars’. Dion and his highly skilled and experienced associates provide security and risk management services to international celebrities, court witnesses, sports personalities, entertainers, film talent and corporate executives throughout New Zealand.

Dion and his nationwide associates provide clients with a range of specialised security and risk management solutions to ensure your public event or private function is safe and secure. Protective Services assists clients with developing and implementing comprehensive risk management strategies to mitigate the risk to people, assets and information.

In today’s society, corporate executives and high profile individuals face increasing threats of extortion, retaliation, public embarrassment and kidnapping. For many, the deployment of discreet protection services has now become a reality. Contact us to discuss your personal protection and security risk management requirements.


Dion Neill commenced his career in the New Zealand security and investigation industry in 1987. Dion was one of the original directors of Wellington Investigations Limited and spent many years as a contractor to a number of private investigation and security companies, prior to establishing his nationwide trading entities, The Neill Group and Protective Services.

In the 1980’s, Dion was a member of an investigation and surveillance team employed to investigate a major organised theft syndicate operating within a national business over many years. As a result of Dion’s evidence, several offenders were convicted in the High Court of New Zealand (Dion survived cross examination by the late Mike Bungay QC).

Dion Neill was one of the first licensed private investigators in New Zealand to carry out investigation assignments for the Accident Compensation Corporation (ACC), New Zealand’s government owned accident and injury insurance agency.

Dion is a former Certified Fraud Examiner (CFE) with a number of recognised qualifications including a Diploma of Security & Risk Management and certificate in investigation skills awarded by the Royal New Zealand Police College – Aotea Training Services.

Dion featured in the popular television series, ‘Private Investigators’ and interviewed on the TVNZ breakfast show regarding protecting high-profile people.

Dion has spent over 30 years conducting security operations, serving legal process, recovering assets, managing undercover operations and personally carrying out hundreds of investigations throughout New Zealand and worldwide.


The Neill Group and Protective Services are the trading names of Dion Neill. Dion is licensed as a private investigator, security consultant, repossession agent, personal guard, property guard, crowd controller and confidential document destruction agent.

Dion only engages contractors (agents and associates) for investigation, security and repossession assignments who hold a current licence issued by the Private Security Personnel Licensing Authority to ensure compliance with the Private Security Personnel and Private Investigators Act 2010.


Dion Neill is the New Zealand agent for Clearwater Projects (UK) and the Anvil Group (USA).


  • World Association of Detectives
  • The Security Institute of New Zealand
  • New Zealand Institute of Professional Investigators (Foundation Member)

Dion Neill has formed strategic alliances and collaborative partnerships with some of the best licensed private investigators and security specialists operating across New Zealand and worldwide. 

A number of our New Zealand associates and international alliance partners are former members of the law enforcement, defence forces and intelligence community, including highly experienced police detectives and specialist military operators.

As a member of these respected professional associations, Dion receives immediate advice and assistance to support international process serving, investigation and security related assignments.


Our agents must sign a confidentiality agreement prior to deployment on any operational assignment. Trust is an important element of our client relationships, our agents understand the seriousness of breaching this agreement. Our nationwide agents and international associates have experience working within confidential environments and respect the privacy of our clients.

New Zealand & Worldwide 

The Neill Group are based in Wellington with a strategic nationwide network of contracted private investigators, security specialists, field agents and process servers in every district 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.