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Professional Technical Surveillance Services – UK Wide
Discreet, lawful, and expert covert surveillance operations, training and equipment — trusted by corporate, government and private clients.


How Much Does Covert Surveillance Cost in the UK?
One of the first questions potential clients ask SIASS is: "How much does covert surveillance cost?" It's a perfectly reasonable question, but unfortunately there is no simple answer. Unlike many products or services, professional covert surveillance cannot be priced using a standard rate card. Every investigation presents unique challenges, objectives, risks and operational requirements. The cost of a surveillance operation depends entirely on what evidence needs to be obtai
Jun 184 min read


Local Concerns About Businesses
Do You Have Concerns About Businesses Such as Barbers or Nail Bars on Your Local High Street? Across the UK, many high streets have seen a noticeable increase in barbershops, nail bars, and similar cash-based businesses. While many of these establishments are entirely legitimate and hardworking local enterprises, some residents are beginning to question whether all such premises are operating as they appear. Recently, SIASS was approached by a local residents’ group who were
Jan 143 min read


How to Spot and Avoid Facebook Marketplace Scams
Facebook Marketplace Scams: What You Need to Know Before It Costs You Money Facebook Marketplace has become a popular place to buy and sell everything from furniture to vehicles. Unfortunately, it has also become a hotspot for increasingly sophisticated scams. At SIASS, we are seeing a growing number of cases where people are being misled, financially harmed, and left with little recourse. This article highlights some of the most common Facebook Marketplace scams currently ci
Jan 143 min read


Guide to the Lawful and Ethical Use of Covert Surveillance
Private surveillance is lawful when conducted properly.
Evidence gathered by SIASS can be admissible if the legal framework is respected.
SIASS follows rigorous standards ensuring privacy, legality, and evidential quality.
Misstatements suggesting private surveillance is inherently illegal are incorrect.
Dec 3, 20254 min read


What is a Technical Operator?
When we hear the term technical operator (sometimes referred to as a technical operative), many people think first of the military. In the UK Armed Forces, technical operators are highly trained personnel who specialise in the deployment and management of technical surveillance equipment. Their role is critical: they use advanced technology to gather information, monitor activity, and support wider operational objectives in environments where precision, discretion, and reliab
Aug 28, 20252 min read


Understanding Technical Surveillance: Tools and Applications
Intelligence gathering using technical surveillance tools is critical. SIASS support our clients to be lawful and ethical.
Jul 10, 20242 min read


What Does It Cost To Hire a Private Investigator in the UK?
Many clients delay hiring a private investigator as they are afraid of the costs involved. Her we explain a little of what to expect.
Nov 8, 20231 min read


What Can Private Investigators Do?
Private investigators or a private intelligence agency is an individual or company that can be hired to conduct private investigations.
Jun 19, 20232 min read
Take a look at our SIASS blog posts below. From information about operations we undertake, to articles about technical surveillance issues, to details about who we are and our approach to private investigations. You will find plenty to interest you.
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