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Video Surveillance and CCTV Systems
Enterprise Video Surveillance & Commercial CCTV Systems
Video surveillance stopped being a recording exercise some time ago. On a modern site, cameras feed analytics, trigger access control decisions, evidence incidents for insurers and regulators, and generate a continuous stream of personal data that your organisation is legally accountable for.
Evolution designs, installs and maintains video surveillance systems for organisations where a gap in coverage or a corrupted export has consequences. We have been doing it for 30 years, and we deliver from offices across the UK, Ireland, the Netherlands, Norway, Italy and the United States.
Video Surveillance System Design and Integration
Site survey, operational requirement definition and camera-by-camera design against risk, not against a camera count
System design aligned to the BS EN 62676 series, including BS EN IEC 62676-4:2025 for planning, installation, commissioning and maintenance
Image quality specification to BS EN IEC 62676-5, so cameras deliver the level of detail the purpose requires
IP camera, encoder and VMS installation across new-build and phased retrofit
Migration from analogue and legacy DVR estates without loss of coverage during changeover
Integration with access control, intruder detection and building management platforms
Video analytics configuration and performance validation, referencing BS EN IEC 62676-6:2026 for grading of real-time video content analysis
Control room and operating procedure design in line with BS 7958 for CCTV management and operation
Storage design, retention scheduling and evidential export procedure
Planned preventative maintenance, 24/7 reactive support and remote system health monitoring
Cybersecurity hardening of the surveillance estate: network segmentation, credential management, firmware lifecycle
CCTV Systems That Deliver Usable Evidence
A commercial CCTV system needs to answer to more than the security manager. It must satisfy the insurer, survive an ICO enquiry, and produce usable evidence months after an incident nobody flagged at the time.
That means getting unglamorous things right. Camera placement calculated for identification rather than detection where identification is the requirement. Retention periods set by documented purpose rather than by whatever the recorder defaults to. Export procedures a duty manager can follow without corrupting the file. Signage that meets the transparency requirement.
We design to those outcomes, then hand over the documentation that proves it.
CCTV Camera Specification Based on Operational Requirement
Most disappointing CCTV systems are not badly installed. They are correctly installed against the wrong requirement.
A camera specified to establish that a person is present cannot necessarily distinguish one individual from another, and almost certainly cannot support identification to evidential standard. These are different pixel densities on the target, decided at design stage rather than recovered in post-processing.
BS EN IEC 62676-4:2025 sets out seven levels of image detail – Overview, Outline, Discern, Perceive, Characterise, Validate and Scrutinise, replacing the four-level DORI framework that preceded it. The change is not cosmetic: the density now expected for validating a known individual or reading a number plate is double what the previous standard set for identification, because the old figure was proving inadequate in low light and with moving subjects.
We establish the operational requirement for each camera position before specifying anything: what this view needs to prove, to whom, and under what conditions. That determines lens, sensor, mounting height and lighting. It is the difference between a system that produces evidence and one that produces footage.
Data Protection and Compliance
CCTV footage of identifiable people is personal data. That places any UK commercial surveillance system under the UK GDPR and the Data Protection Act 2018, enforced by the Information Commissioner’s Office.
Practically, on every system we deliver, we work with you on:
Lawful basis and purpose
Documented before design, not retrofitted after installation.
Data Protection Impact Assessments
Required where surveillance is likely to result in high risk to individuals, and expected as standard practice for systematic monitoring of publicly accessible areas.
Proportionality of coverage
Camera angles reviewed against necessity. Areas with a high expectation of privacy excluded or masked.
Retention
Defined by purpose, technically enforced by the system, not by policy alone.
Subject access
A workable process for responding to footage requests within statutory timescales.
Transparency
Signage placement and wording that meets the requirement to inform.
Public authorities in England and Wales operating surveillance in public places also have regard to the Surveillance Camera Code of Practice, made under the Protection of Freedoms Act 2012. Where you fall in scope, we design and document accordingly.
Cybersecurity for Video Surveillance Systems
A camera is a networked computer with a lens attached. Treated carelessly, a surveillance estate becomes one of the largest unmanaged attack surfaces on a corporate network: default credentials, unpatched firmware, flat network placement, and remote access opened for a maintenance visit three years ago and never closed.
We treat the surveillance estate as part of your cyber posture. Segmented networks, managed credentials, firmware lifecycle tracking, documented remote access, and decommissioning procedures for devices leaving service. Evolution is certified to ISO 27001 for information security management, and applies the same standard to the security systems we deliver as to our own operations.
Our Video Management Systems and Surveillance Technology
Evolution is independent and employee-owned. We specify against the requirement rather than a supplier target, and we hold partner accreditation across the platforms our clients standardise on.
For video surveillance that includes Milestone as a Solution Partner, Genetec as a Certified Elite Partner, and Axis Communications as a Solution Gold Partner, alongside Hanwha Vision, Avigilon, Avigilon Unity, Tyco American Dynamics, Exacq, OpenEye and Eagle Eye Networks. Video analytics capability includes Milestone and IntelexVision. Transmission and network infrastructure is delivered with AMG Systems, Barox and ComNet.
Video Surveillance in Practice
Hyperscale data centre, 800 cameras, twelve months
A hyperscale data centre operator needed a full security infrastructure deployment across a facility being built around it. The surveillance requirement alone ran to 800 cameras, alongside 70-plus access-controlled doors and 1,500 alarm points, all integrated into a single management platform and all meeting Tier III/IV data centre standards.
The constraint was not the camera count. It was that the operator needed to activate data halls progressively as construction completed, rather than waiting for the whole facility to finish. That meant commissioning in phases aligned to the build programme, with each phase handed over live while work continued around it.
Evolution ran a full-time project management team on site for the twelve-month duration, with a dedicated project engineer and an on-site administrator handling technical coordination and logistics. Peak deployment reached 30 engineers concurrently.
The operator’s project leadership described the phased commissioning as the element that made progressive hand-over possible, and noted that quality and attention to detail held consistent across the full programme.
Sector-Specific Video Surveillance Solutions
FAQs About Video Surveillance & CCTV Systems
Scale and integration. A commercial CCTV system typically covers a single site with a defined camera count and local recording. An enterprise video surveillance system spans multiple sites under a single management platform, integrates with access control and other security systems, applies consistent retention and access policies across the estate, and is managed as part of the organisation's wider IT and compliance posture.
The BS EN 62676 series covers video surveillance systems for use in security applications: BS EN 62676-1-1 for system requirements, BS EN IEC 62676-4:2025 for planning, installation and maintenance, BS EN IEC 62676-5 for image quality, and BS EN IEC 62676-6:2026 for grading video content analysis performance. BS 7958 covers management and operation. Data protection is governed by the UK GDPR and the Data Protection Act 2018. Relevant authorities in England and Wales also have regard to the Surveillance Camera Code of Practice made under the Protection of Freedoms Act 2012.
Ask for graded performance rather than a demonstration. BS EN IEC 62676-6:2026 establishes a method for testing and grading real-time intelligent video content analysis, which gives you a basis for comparing claims rather than accepting them. Analytics that perform well in a vendor demo and poorly on your site are usually failing on lighting, camera angle or scene complexity that the demo did not replicate.
There is no fixed statutory period. Retention must be justified by the purpose you documented for the system, and footage must be deleted once that purpose is served. Many commercial systems settle on 30 days, but a period that is right for one site can be excessive or inadequate for another. The test is whether you can justify the period you chose.
Usually, yes. The ICO expects a Data Protection Impact Assessment for systematic monitoring of publicly accessible areas on a large scale, and for most workplace surveillance. Completing one before design is considerably easier than reverse-engineering one after installation.
In most cases, yes. Integration depends on the platforms involved and the interfaces they expose. We survey both systems before committing to an approach and will tell you where an integration is not achievable without replacing a component.
Yes. We maintain and support both our own installations and third-party systems across the UK, Ireland, Europe and the United States.