At DEMUX™, we specialise in helping professionals make sense of complex audio-visual evidence. Founded by Dave Thorne — a former Detective with Bedfordshire Police and a leading expert in CCTV analysis — DEMUX™ combines frontline investigative experience with technical precision.
With a deep understanding of video recovery, analysis, and court presentation, we deliver software and hardware solutions that streamline the entire process. From retrieving footage to redacting sensitive content, our tools are built to help you uncover the truth with speed, accuracy, and compliance.
Our clients include solicitors, barristers, police forces, local authorities, security firms, regulatory bodies, health and safety investigators, and government departments. We understand the urgency and legal weight of video evidence — and we’re trusted to deliver solutions that stand up in the real world and in the courtroom.
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We’re proud to have built strong, lasting partnerships across the security and legal sectors.
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Committed to delivering reliable support, training, and hardware solutions tailored to your needs.
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Decades of experience in video and CCTV evidence, ensuring precision and trust in every solution.
We’re continually innovating to stay ahead in the fast-moving world of forensic technology. From emerging techniques to custom-built solutions, we’re here to support your evolving needs. Can’t find what you’re looking for on our site? Explore our training courses or get in touch — we’ll always do our best to deliver, even at short notice.
Thanks again for the very efficient service you offer. You are by far one of the easiest forensic companies to deal with, which is very refreshing and much appreciated. DVR examiner has been a great tool for us over the past year. I have recently been asked by our Divisional Commander to produce a report on the efficiency savings it is giving us as a force. We look forward to using it for another year.
90 weeks work in 2 weeks. We received a request to redact 30 video files which were screen recordings from a website between 1-3 min in length. The website had multiple images of women and was scrolling very quickly. Officers had requested that we redact their faces to protect their identities. Our usual workflow for video redaction is masking within a non-linear editor (NLE). Normally whilst relatively slow, we find it to be fairly accurate. In this instance however, after all the keyframing work, I would play the video back to check it and it was as if the keyframes had shifted position a few frames. I’d then go back and fix this and playback again and it would appear the keyframes had shifted again. We then tried specialist forensic video software and whilst this worked, it was incredibly time intensive, taking multiple days to complete one file. We estimated that it would take around 90 weeks working on the job nonstop. CaseGuard enabled me to complete the job in under 2 weeks - much quicker than our anticipated 90 weeks. This job required frame by frame redaction and having CaseGuard scan through the file and cover over 75% of the work was a massive time saver. Of course, it is still vital to manually review the work afterwards but even with scrubbing through the video 1 frame at a time to check each redaction and make small edits here and there is much quicker than redacting the whole file from scratch. I’ve since used CaseGuard on one further job since completing this one and again, the time saving is incredibly helpful. Both Dave (DEMUX) and CaseGuard support were very helpful in helping us to get the software up and running and answer some initial questions we had relating to licensing. This has since been followed up by a call with our account representative from CaseGuard and we will be arranging some training for our team early 2026.
During an on going major investigation our team were tasked with gathering CCTV evidence from an unbranded DVR that had an unknown password. After several failed attempts to locate the required information to allow access to the DVR contact was made with Demux Video Services Ltd, regarding DME Forensics, DVR Examiner. Within 48hrs from point of order we received the product; this allowed us immediate access to the required CCTV Footage by extracting the data direct from the DVR’s HDD. With out Demux Video Services Ltd and DME’s DVR Examiner we would have faced lengthily delays and may even have been unable to retrieve the evidence that we required.
I can confidently say that CaseGuard stands out as one of the best redaction tools on the market. Its easy to use interface coupled with powerful AI features makes the redaction process seamless and efficient. CaseGuard has greatly assisted us with blurring faces, removing sensitive information and following individuals in crowds, CaseGuard handles it all with precision and speed. We have used it for a wide range of jobs, these include CCTV of football disorder offences in which there are large groups of offenders that need highlighting and tracking, to body cam footage of domestic violence offences where individuals within a property need their faces redacting. CaseGuard has never failed to deliver exceptional results. Thanks to CaseGuard, we can confidently redact videos, knowing that sensitive information is protected without compromising on quality. It’s a must-have tool for any organisation serious about video redaction. Demux facilitated the purchase of CaseGuard very professionally. They were extremely helpful with setting up a product demonstration with CaseGuard, and they also were very accommodating, providing us with a trial of the software. Purchasing CaseGuard through Demux was great as they supported us every step of the way.
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