RF Engineering
Extensive hands-on experience with spectrum analysis, RF measurement, antennas, transmitters, receivers and complex radio environments.
Bug Detectors UK provides engineering-led Technical Surveillance Counter-Measures for private and corporate clients in London and throughout the UK.


Glenn Darien is Company Director and Head of Engineering at K9 Electronics, the company behind Bug Detectors UK. With more than 40 years of practical electronics experience, he leads the company's engineering and technical activities.
Our engineering team designs, develops, tests and manufactures specialist electronic surveillance and counter-surveillance technology. This company-wide engineering capability supports our TSCM services, bringing practical knowledge of how modern electronic surveillance systems operate to investigations of homes, businesses, boardrooms and vehicles.

Our approach combines electronic measurement, physical inspection and engineering judgement. Where a suspect or unexplained item is identified, its construction, circuitry, function and electronic behaviour can be examined in our RF and electronics workshop rather than relying solely on an alarm from a handheld detector.
This practical engineering capability supports the wider Bug Detectors UK team and helps provide clients with clear, evidence-led findings.
Our TSCM work is supported by an electronics engineering team led by Company Director and Head of Engineering Glenn Darien, drawing on more than 40 years of practical experience in RF, analogue and digital electronics, electronic design, test, measurement and fault investigation.
Extensive hands-on experience with spectrum analysis, RF measurement, antennas, transmitters, receivers and complex radio environments.
Practical knowledge of professional covert audio and surveillance electronics provides insight into how modern devices operate and how they may avoid basic detection methods.
We combine technical measurements with methodical physical and electronic inspection rather than relying on a single handheld detector.
Our background is not limited to commercially available counter-surveillance equipment. Experience in RF engineering and surveillance electronics gives us a practical understanding of transmitters, digital radio techniques, intermittent signals and the limitations of simple RF detection.
We provide discreet TSCM services for homes, offices, meeting rooms and vehicles. Each enquiry is assessed individually so that the inspection is appropriate to the environment and the client's concerns.
Enquiries and findings are treated discreetly. We understand that clients may be dealing with commercially or personally sensitive circumstances.
Where required, findings can be documented with technical observations, relevant photographs and practical recommendations.
Services are available in London and throughout the UK, with scope and travel confirmed before attendance.
Bug Detectors UK is operated by K9 Electronics Ltd, a UK electronics engineering company. The service is supported by the company's electronics engineering team and draws on decades of electronics, RF, design, test and manufacturing experience.