Commercial CCTV Systems Guide for UK Businesses

A commercial CCTV system does far more than record footage. Designed well, it deters crime, helps protect staff, gives managers a view of what is happening across one site or many, and provides clear evidence when something goes wrong. This guide explains how commercial CCTV systems work, the main choices you will face, and what to think about before an installation.

What is a commercial CCTV system?

A commercial CCTV system is a network of cameras, recording equipment and software designed for business premises such as offices, warehouses, retail units, industrial sites, schools and laboratories. Compared with basic off-the-shelf kits, commercial systems are built to cover larger areas, run continuously, handle more cameras and integrate with other security systems.

Most modern systems are made up of:

• Cameras positioned to cover entrances, perimeters, car parks, stock areas and other key zones
• A recorder or server (on site, in the cloud, or both) to store footage
• Video management software to view live and recorded images and search for events
• A secure network connecting the cameras, recorders and viewing devices
• Signage and procedures so the system is used lawfully

Camera types

Choosing the right camera for each position is one of the most important design decisions. Common commercial camera types include:

• Dome cameras – discreet, vandal-resistant and well suited to ceilings and entrances
• Bullet cameras – a visible deterrent, often used on building exteriors and perimeters
• PTZ (pan, tilt and zoom) cameras – can be moved and zoomed to follow activity across large areas such as yards and car parks
• Multi-sensor and panoramic cameras – cover a wide area from a single mounting point
• ANPR cameras – read vehicle number plates for car parks, gatehouses and logistics sites
• Thermal cameras – detect heat signatures in darkness or poor weather, useful for perimeter protection

Resolution, low-light performance and lens choice matter as much as the camera style. A camera covering a doorway needs enough detail to identify a person, while one covering a car park may only need to show movement and vehicles. For more detail, read our guide to CCTV camera types, or see our ANPR cameras page.

IP and analogue CCTV

Most new commercial systems use IP (network) cameras, which send digital video over a data network. IP cameras generally offer higher resolution, simpler expansion, remote access and support for analytics. Older analogue systems can often be upgraded in stages, reusing some cabling where practical, so it is worth having an existing system assessed before replacing everything.

Recording and storage: on site or in the cloud

Footage can be stored in three main ways:

• On site – a network video recorder (NVR) or server on the premises. This gives you direct control of your footage and does not depend on internet bandwidth.
• In the cloud – footage and management are hosted online, so there is less hardware on site and systems across several locations can be managed from one place.
• Hybrid – recording on site with selected footage, alerts or management in the cloud.

The right option depends on the number of cameras, your internet connection, how long you need to keep footage and how many sites you manage. Our articles on what cloud CCTV can do for your business and IP CCTV vs cloud CCTV explain the trade-offs in more detail.

Video management software

Video management software (VMS) is how your team views cameras, reviews recordings and exports evidence. A good VMS makes it quick to find an incident, manage user permissions and bring many cameras or sites into one view. BDi Advance works with Milestone XProtect, an open platform that works with a very wide range of cameras and third-party applications, and with Milestone Arcules (formerly Milestone Kite) for cloud-based video management.

AI and video analytics

Video analytics use software to interpret what a camera sees. Early systems relied on simple motion detection, which often produced false alerts from moving trees, shadows or weather. Modern AI analytics can distinguish people from vehicles, detect unusual activity, alert on loitering or line crossing, and make it much faster to search hours of footage for a particular person or vehicle.

As certified Avigilon installers and through our partnership with i-PRO, we can advise on camera ranges with built-in analytics. Read more in CCTV analytics explained and what is AI CCTV?

Remote viewing and monitoring

Most commercial systems can be viewed securely from a phone, tablet or computer, so authorised managers can check a site out of hours or review an alert without travelling. Systems can also be set up to send notifications when analytics detect activity in a defined area.

Some businesses choose to connect their CCTV to a professional remote monitoring service, where trained operators respond to alerts. Whether this is right for you depends on your site, your risks and any insurer requirements, and we can talk through the options during a site visit.

Integration with other security systems

CCTV is most effective when it works alongside your other systems. Linking cameras with access control lets you see who used a door and when, while integration with intruder alarms helps verify alarm activations. ANPR can automate vehicle access and record vehicle movements. Find out more in our article on the benefits of integrating CCTV and access control.

CCTV, GDPR and data protection

If your cameras capture images of identifiable people, the footage is personal data and UK GDPR and the Data Protection Act 2018 apply. In practice, businesses should:

• Be clear about why they use CCTV and record that purpose
• Complete a data protection impact assessment where the use of surveillance is likely to be high risk
• Position cameras so they cover only what is needed, avoiding neighbouring property and private areas
• Display clear signs showing that CCTV is in use and who operates it
• Keep footage only for as long as it is needed, then delete it securely
• Restrict who can view and export footage, and keep the system secure
• Be ready to respond to subject access requests, normally within one month

The Information Commissioner’s Office (ICO) publishes guidance on video surveillance for organisations. Our guide to CCTV and data protection for UK businesses covers this in more depth, and our article on overt vs covert CCTV in the workplace explains when each approach may be appropriate. This is general information rather than legal advice.

Planning a CCTV installation

A reliable system starts with a proper survey. When planning a commercial CCTV installation, consider:

• Your objectives – deterrence, identification, monitoring staff safety, stock protection or all of these
• Coverage – entrances, perimeters, car parks, loading bays, stock areas and blind spots
• Lighting – day, night and changing conditions at each camera position
• Network and power – cabling routes, network capacity and whether cameras can be powered over the network
• Storage and retention – how long footage needs to be kept and where
• Who needs access – on site, remotely and across multiple sites
• Future growth – room to add cameras, analytics or further sites later

At BDi Advance, quotations start with a free site visit. Our engineers assess the premises, discuss your objectives and design a system around them. Installations are carried out under our SSAIB certification.

Maintaining your CCTV system

Cameras can drift out of position, lenses get dirty, hard drives fail and software needs updating. Regular maintenance keeps the system recording reliably so that footage is there when you need it. Our maintenance contracts include a full check twice a year as standard, with remote support and diagnostics, a 24-hour manned service line and a 24-hour emergency technician call-out, 365 days a year. We also service, maintain and take over systems installed by other companies. See our maintenance page and our article on CCTV maintenance best practice.

Talk to BDi Advance about commercial CCTV

BDi Advance designs, installs and maintains commercial CCTV systems for businesses across Cambridgeshire and East Anglia, with local engineers based in Huntingdon. We also work with national clients across the UK. To discuss a new system, an upgrade or maintenance for an existing one, contact us to arrange a free site visit, or call 01223 566 599.