Welcome to SIS Investigations UK
At SIS Investigations we provide professional and confidential private investigation services across the United Kingdom. Our mission is to deliver clear, reliable information and tailored solutions that help our clients make informed decisions.
Trusted Private Investigator Services
Whether you are an individual seeking answers or a business requiring discreet support, SIS Investigations offers investigation and consulting services built on trust, integrity, and expertise. We are committed to protecting your privacy and providing results you can rely on.
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Visit us: www.sis-investigations.co.uk
ABOUT SIS -Investigative Services
SIS was founded to provide discreet, reliable and results-driven private investigations in London and across the UK.
Founded by Gyula Szabados, with over a decade of professional investigative experience – including 8 years as a criminal investigator in Hungary and further work as a private investigator in London – we bring proven expertise and dedication to every case.
Our focus is on field investigations: surveillance, tracking and locating individuals. We specialise in infidelity cases, missing persons investigations and thorough background checks.
What sets SIS apart is our old-school, on-the-ground approach. We believe the best results come from patience, attention to detail and real-life observation – not just sitting behind a computer screen.
Every enquiry is handled with professionalism, integrity and the highest level of confidentiality. Our mission is simple: to uncover the truth and deliver peace of mind to our clients.