In the world of professional private investigation, visibility is not a virtue. Discretion, on the other hand, is everything. At SIASS, our commitment to confidentiality, subtlety and covert practice defines who we are—and more importantly, how we succeed.

At SIASS, we are committed to advancing professionalism and ethical practices in the technical surveillance industry.

Yes, you can hire a private investigator in the UK to follow someone, provided it's done within the bounds of the law.

Fly-tipping, the illegal dumping of waste, is a blight on our communities and a threat to wildlife. how do SIASS help to solve the issue?

What is a TSU in UK policing? What does SIASS offer the commercial and private sector?

SIASS covert technical surveillance training designed to equip individuals with the skills necessary to conduct investigations effectively.

Installing a covert camera to capture evidence of a suspected crime, such as elder abuse in a care home, requires careful consideration of s

SIASS, a premier Commercial Technical Support Unit, offers technical surveillance services to a wide range of clients.

Intelligence gathering using technical surveillance tools is critical. SIASS support our clients to be lawful and ethical.

At SIASS, we invest heavily in technology to ensure our clients get the best results in the fastest most discreet way.

Read about one of the high profile cases SIASS have been involved with.