Melbourne’s Leading
Private Investigator

Hiring a private detective was a first for me, not only was I impressed with the service, the investigators showed real dedication to the job, after I initially made inquiries for costs and services with various other firms contacting Group One Investigations was the best thing I did, the price and service was a standout, being in direct contact with the private detective that handled my case from start to finish also made me feel at ease.

To all at Group One Investigations, thank you so much for all of your work in helping me reunite with my family, I tried many different companies but you are the only ones that went the extra mile and as a result I'm in touch with my family again

Thanks for a great job. These guys really care... spent the time to listen to me. Gave good advice and saved me money too. Happy to recommend them and appreciate the good service. Was not an easy job but they were experiences and nothing was a problem.

Best Melbourne Private Investigators I've come across

Thank you to everyone at Group One Investigations, your assistance during my difficult personal times was much appreciated, the results helped with closure.

I'm very please with the efforts the Group One Investigators put in on my job, it was a job requiring a private investigator Melbourne and Sydney they were able to assist in both states, very impressed

I pleased to recommend the services of Group One Investigations, not only were their prices very reasonable the service and results were fantastic.

Great result and price

I was initially nervous and quite unsure about this surveillance thing, but Adrian helped me throughout. He made a clear plan about the case. Excellent service. Cost effective. I would strongly recommend Adrian if anyone’s is looking for private investigators.

Thanks for a great job. These guys really care... spent the time to listen to me. gave good advice and saved me money too. Happy to recommend them and appreciate the good service. Was not an easy job but they were experiences and nothing was a problem.

Customer service very good. They listen and are very helpful. Nothing was a problem. Group One were well priced too. Very impressed with how they treat their customers. Highly recommend this company.

Group One Investigations was very personable, helpful and understanding. I was nervous about using this type of service, and they put my mind at ease. I found out what I needed to know within 2 short days. Thank you again for your professional and sincere support.

Money very well spent. All my questions were answered. The team provided updates while on the job with video clips to keep me informed. Very experienced private investigators. Highly recommended.

It is with great pleasure I write this review. Group One Investigations Melbourne were not only able to resolve my matter quickly but their fees were very reasonable compared to the other companies I called prior to engaging Group One. Thanks again."

Thanks to the team at Group One Investigations Melbourne for their exceptional work. They are very experienced PI's. The entire service from the first phone call to the final report was fantastic. Highly recommended.

Highly experienced investigators that were extremely professional, extremely well priced and resolved my request very promptly. Fantastic service and I highly recommend!!! Thanks Again!!!

Used Group One Investigations Melbourne to locate someone that owed me money. They found him within two days and they were fair charging for this. I recommend them......

Thanks for the great result guys. I highly recommend Group One Investigations Melbourne. Cost and results were fantastic.

Best in Melbourne by far. Thanks for the great work

Thank guys, really appreciate your attention to detail on this and fast turn around time. Money well spent, I highly recommend Group One Investigations Melbourne."

Very professional outfit. Gave me peace of mind at a reasonable price. Thanks again!

I was lucky to find Adrian the day I searched for PI's. He was very friendly, polite and attentive to my request which was resolved the same day.

Have used Group One Investigations twice now for employee checks and surveillance. Great service and price.

Highly experienced investigators that get the job done. Thank you.

Was able to do the job on time, without fuss, without extra cost. We have used other firms but found Group one the most reliable.

Thanks Gents, an excellent result! Group One Investigations provide an exceptionally discrete, fast, professional and cost effective solution, can't recommend them enough.

Fast, reliable, competitively priced, regular updates on the progress of our job. The service was great and the results were fantastic. Thanks again Group One!