About Us


Not sure if you need to engage a security expert or private investigator?

Doing nothing or taking matters in your own hands will always leave you vulnerable to further harm.

If you’re not sure, just give us a call. Our North Queensland private investigator is happy to discuss matters confidentially and advise if we can help.


Quality service across all areas

We service all areas across Queensland and New South Wales from our base in North Queensland. Our North Queensland private investigator and security personnel typically cover all areas from Mackay to Townsville; however we are happy to conduct investigations outside these areas depending on your needs. Need a professional private investigator who will go undetected? Contact us.

How we work

Our North Queensland private investigators are highly trained and provide both factual reports and surveillance investigations. We invest in the latest technology and keep our skills up to date with hands-on practical and digital surveillance techniques to ensure that we can detect fraudulent behaviour and suspicious activity before anyone else. Find out more about our surveillance services.



Experienced security advisers

NM Investigative Services was founded by North Queensland private investigator and security professional Nathan Milne. Nathan is a licenced private investigator (QLD licence number 4045911) and has a range of security skills developed over many years in the industry. He has eight years’ experience providing licenced security services and four years’ experience conducting insurance investigations direct to government and business. If something isn’t right, we’ll find it out.

Our guarantee

Every job is unique and every client is unique. We tailor our services to suit your needs. Our promise is to do everything we can, legally and professionally, to deliver the highest result for each client. We guarantee that our North Queensland private investigators will provide professional reports prepared in accordance with legal requirements and implemented policies.