CCTV Installation Guide for Small Businesses

March 2025 9 min read MPW Electrical Security

For a small business owner, CCTV is one of the most cost-effective security investments you can make. It deters theft and vandalism, provides evidence in the event of an incident, reduces insurance premiums, and gives you visibility over your premises even when you're not there.

But knowing how to approach a CCTV installation — how many cameras, what spec, where to put them, how to store footage, and what your legal obligations are — can feel overwhelming. This guide answers all of those questions in plain English.

Step 1 — Identify What You're Protecting

Before thinking about cameras, walk around your premises and identify the key risk areas:

• Entry and exit points — the most important locations. Cameras here capture everyone who enters or leaves, and provide identity evidence in the event of a theft or break-in.
• Cash handling / till areas — essential for retail premises.
• Stock rooms and high-value storage areas
• Car park or external yard — vehicle theft and damage is common in commercial settings.
• Back doors and fire exits — often the most vulnerable entry point, yet frequently overlooked.

A good CCTV installer will carry out a free site survey and recommend camera positions based on this risk assessment — not just place cameras in obvious spots.

Step 2 — How Many Cameras Do You Need?

The number of cameras depends on the size and layout of your premises. Here are typical camera counts for common business types:

Business Type	Typical Camera Count	Coverage
Small retail shop (under 1,000 sq ft)	4–6 cameras	Entrance, till, stockroom, rear exit
Medium retail / takeaway	6–10 cameras	All above + outdoor frontage, seating or prep areas
Small office (under 20 staff)	4–6 cameras	Reception, server room, exits, car park
Warehouse / workshop	8–16 cameras	All access points, loading bay, internal aisles
Pub / restaurant	8–12 cameras	Entrance, bar, cellar, external area, car park

Step 3 — What Resolution Do You Need?

Camera resolution has improved dramatically in recent years. For business use, we recommend a minimum of Full HD (1080p / 2MP), with 4K (8MP) for areas where identifying individuals at a distance is important (e.g. a car park or a wide entrance).

Resolution	Best For	Notes
2MP (1080p Full HD)	Indoor coverage, small premises	Good image quality, cost-effective, widely used
4MP (2K)	Good all-round choice	Better detail than 1080p, reasonable storage overhead
8MP (4K)	Car parks, large open areas, entrances where face ID is needed	High detail, higher storage requirement

Don't be sold on 4K throughout if you don't need it — 1080p or 4MP cameras in most positions with 4K at the key entry points is a sensible and cost-effective approach.

Step 4 — Night Vision and Low-Light Performance

Most business CCTV incidents happen in low light — evenings, overnight, or in poorly lit areas. The quality of night vision varies significantly between camera models.

• IR (infrared) night vision — the standard. Works well in darkness but produces black and white footage. Effective range is typically 20–40 metres for business-grade cameras.
• Full-colour night vision — newer technology (e.g. Hikvision ColorVu) that uses a wide-aperture lens to produce colour footage even in very low light. More expensive but gives significantly better identification quality.
• Spotlight cameras — combine a visible light with the camera to deter intruders and produce colour footage. Good for car parks and external areas.

For business CCTV, we generally recommend full-colour night vision or spotlight cameras at external entry points, and standard IR cameras for internal coverage.

Step 5 — Storage: NVR, DVR or Cloud?

Footage needs to be stored securely and retained for a reasonable period. The main options are:

NVR (Network Video Recorder)

An NVR connects to IP cameras over your network and records to a hard drive. This is the current industry standard for business CCTV. Modern NVRs can also enable remote viewing via a smartphone app.

• 4-channel NVR (4 cameras): from £120
• 8-channel NVR (up to 8 cameras): from £180
• 16-channel NVR (up to 16 cameras): from £280

Add at least 1TB of storage for continuous recording across 4 cameras — budget for 2–4TB for larger systems or longer retention periods.

DVR (Digital Video Recorder)

DVRs are used with older analogue cameras. If you're installing a new system, we recommend going IP/NVR — the image quality is significantly better and the systems are more flexible.

Cloud Storage

Some cameras support direct cloud upload (e.g. Hikvision Hik-Connect, Ring). Cloud storage means footage is stored off-site — useful if the recorder is stolen — but subscription costs can add up and upload quality depends on your broadband speed.

Step 6 — GDPR and Legal Obligations for Business CCTV

Operating CCTV at your business comes with legal obligations under UK GDPR and the Data Protection Act 2018. Non-compliance can result in ICO enforcement action and fines.

ICO Registration

You must register with the Information Commissioner's Office (ICO) as a data controller. Annual registration costs £40–£60 for most small businesses.

Signage

You must display clearly visible CCTV warning signs at all entrances to areas under camera surveillance. Signs must state the purpose of the CCTV and who operates it. Your installer can supply compliant signs.

Retention

The ICO recommends retaining footage for no longer than 31 days for most businesses, unless there is a specific reason to keep it longer (e.g. an ongoing investigation). Footage must be stored securely and access restricted to authorised personnel.

Requests for Footage

Individuals have the right to request access to CCTV footage in which they appear (a Subject Access Request). You must respond within one month. You may need to redact other individuals' faces before sharing footage.

Step 7 — How Much Does Business CCTV Cost?

System Size	Typical Installed Cost
4-camera system (small shop or office)	£800 – £1,600
6-camera system	£1,200 – £2,200
8-camera system	£1,600 – £3,000
12–16 camera system (warehouse/larger premises)	£2,800 – £6,000+

These prices include supply of cameras, NVR and cabling, professional installation, configuration, and a handover walkthrough. Prices vary based on camera specification, cabling complexity (e.g. distance from NVR), and whether external cameras require a weatherproof housing.

Frequently Asked Questions

How many CCTV cameras does a small business need?

Most small businesses need between 4 and 8 cameras. A small retail shop typically needs 4–6 cameras covering the entrance, till area, stockroom and rear exit. A small office or workshop typically needs 4 cameras covering entrances and key internal areas. Your installer will recommend the right number after a free site survey.

Do I need to register my business CCTV with the ICO?

Yes. Under UK GDPR, businesses that operate CCTV must register with the Information Commissioner's Office (ICO) as a data controller. Registration costs £40–£60 per year for most small businesses. You must also display clearly visible CCTV warning signs on your premises.

How long should business CCTV footage be retained?

The ICO recommends retaining CCTV footage for no longer than 31 days for most businesses, unless there is a specific reason to keep it longer (e.g. an ongoing investigation). Footage must be stored securely and only accessible to authorised personnel.