A full-range legal investigative firm serving the UK Government, legal, banking, financial and insurance professions — with every service delivered entirely in-house.
Delivered entirely in-house — from initial instruction through to evidenced report.
A comprehensive suite of legal investigative solutions — surveillance, due diligence, fraud investigation, and more — with in-house forensic computing and a private prosecutions team ready when it matters most.
We follow the evidence and report the facts. Our only obligation to our client is the truth — without judgement, without compromise.
Where applicable, final charges are determined after service completion.
Specialist investigative products and reports — enquire to discuss your requirement.
Expert collision scene analysis, evidence gathering, and independent reporting for insurers, solicitors, and courts.
Real reviews from real customers
I needed a collision investigation report for my insurance after an accident on the M60, and these guys sorted it out so quickly. The level of detail in their reconstruction was absolutely amazing.
Leila U.
The NESIS Group GB Ltd provided outstanding investigative services and didn't charge an absolute fortune. Highly recommend them if you want great value and professional results in Manchester.
Lucas N.
They were so friendly and made a really stressful situation feel so much easier to handle. I'm really glad I chose them for the investigation.
Fatima J.
Really straightforward process and they kept me updated the whole time. Top notch service from a great local team.
John A.
The NESIS Group GB Ltd has operated from Manchester for over three decades, providing a full range of legal investigative services to some of the most demanding institutions in the United Kingdom — from His Majesty's Courts & Tribunal Service to blue-chip corporations and private individuals.
Unlike firms that outsource critical work, every element of our service — including forensic computing and our private prosecutions team — is managed entirely in-house. We follow the evidence. We report the facts. Our only obligation to you is the truth.
Four principles that have defined our practice since 1987.
Mandated by UK Government departments, local authorities, and His Majesty's Courts & Tribunal Service — institutions that demand absolute rigour.
Forensic analysis, digital computing, and a dedicated private prosecutions team — all under one roof. No subcontracting. No broken chains of custody.
Every engagement is handled with total discretion. We do not judge our clients, and we do not disclose our clients. What you share stays here.
We follow the evidence wherever it leads and report the facts without embellishment. Our obligation is to accuracy — not to the outcome you might prefer.
Clarity before engagement — exactly as it should be.
Pricing is determined on a case-by-case basis depending on scope, complexity, and duration. A deposit may be required to secure your instruction. All financial arrangements are agreed in writing before work commences. Enquire directly for a confidential fee discussion.
We handle a broad range of legal investigative matters including surveillance, fraud investigation, due diligence, asset tracing, collision investigations, digital forensics, and private prosecutions. If you are uncertain whether your matter falls within our remit, contact us — we will advise promptly.
Yes. While a significant portion of our work is conducted for government bodies, courts, and the legal and financial professions, we also act for sole traders, limited companies, and private individuals. Every client receives the same standard of professional service and confidentiality.
Our offices are at Initial House, Wilson's Business Park, Manchester. We operate across the United Kingdom and are experienced in matters requiring cross-jurisdictional coordination. Initial consultations can be conducted in person or remotely.
Confidentiality is foundational to our practice — not an add-on. With over 38 years of service to the UK's most sensitive institutions, including HMCTS and government agencies, our track record speaks clearly. Your initial enquiry is treated with the same discretion as a fully commissioned case.
Reach us directly. All initial contact is treated in strict confidence.
