Business CCTV Installation Guide UK 2026: Survey to Handover

A sound business CCTV installation is decided on the survey sheet, not on the day the cameras go up. Survey by risk zone, give each camera a job (identify, recognise or detect), and budget power, cable and storage in writing before you ask for prices. Then insist on a line-item quote, followed by testing and documented handover. We sell the equipment, and your own installer or electrician fits it, so this guide is written to help you brief and check their work.

What should a business CCTV installation survey record?

A survey is a fixed sheet of measurements taken at every camera position, not a camera count guessed from a floor plan.

Group the site into risk zones: entrances, goods-in, cash points, perimeter and car park. Then give each camera one job. Identify means a face or plate you could put a name to, recognise means someone you already know, and detect means something has entered the area. The job sets the lens and the mounting distance, so a tight entrance view and a wide yard view are different specifications. A fixed-view model such as the Hilook 4 MP Fixed Mini Bullet Camera THC-B140-R is listed for entrances and corridors, but check each datasheet against the job.

For every position, record:

• Mounting height and surface: brick, render, soffit or cladding decides the fixings and whether you need a bracket or pole.
• Lux at the worst time of day: measure at the end of a winter shift or overnight, not during a bright daytime visit.
• Exposure: open, sheltered or splashed positions set the IP rating you need. Read it from the datasheet rather than assuming.
• Backlight or glass: note low sun facing a door, and any window a camera would have to shoot through.

Next, log the cable route: containment, every wall penetration, and the distance back to the recorder. Check that distance against the cable's stated run limit. Also note who owns the building, because drilling and external fixings usually need landlord consent in writing.

Settle retention before choosing a recorder. Storage is camera count × bitrate × days kept, so the drive capacity follows from the retention period. What justifies that period is a UK GDPR question, covered in our CCTV law guide.

How do you work out PoE, cabling and storage before ordering?

Do three sums on paper from datasheet values: camera power draw against the switch's PoE budget, cable run against the cable's rated reach, and bitrate against retention days.

PoE budget

Add up the maximum draw each camera datasheet lists. That total must sit inside the switch's overall PoE budget with headroom, and each camera must also fit the switch's per-port limit.

sum(camera_max_watts) + headroom ≤ switch_total_poe_budget_watts

Use the highest wattage the datasheet gives, not a typical figure. Our PoE switch guide explains how switch budgets are stated.

Cable

Check each run against the reach and spec in our Cat5e guide, CAT6 guide and Cat5e vs CAT6 comparison. Mains feeds to the recorder and switch are a job for your electrician, working to BS 7671. Low-voltage data cabling is a separate matter.

Storage and retention

Bitrates come from each camera's datasheet or the recorder's own calculator. Convert the result to gigabytes or terabytes, then add headroom so the disk is never sized to the exact day.

storage_bytes = retention_days × 86,400 × (bitrate_1 + bitrate_2 + … + bitrate_n) ÷ 8

Here each bitrate is in bits per second, 86,400 is the seconds in a day, and ÷ 8 converts bits to bytes. Our NVR guide covers channel counts, so check the recorder has enough channels before you size the disk.

Mixed estates

If you are keeping Turbo HD cameras alongside IP ones, split the sums by recorder type. The Hilook 3 MP Fixed Mini Bullet Camera THC-B230-R, for example, needs a compatible Turbo HD DVR to record. It takes a DVR channel rather than an NVR one, so check its datasheet for how it is powered before adding it to the PoE total.

What drives the cost of a commercial CCTV installation quote?

A quote's total follows its line items, and two quotes differ mainly because each installer has scoped a different job. Camera count is only one input, so ask for the work broken down.

The line items that move the total

• Cabling and containment: run lengths, and whether cable goes in trunking, conduit or open clips.
• Labour and days on site: the number of installer-days is often what separates two quotes with the same kit.
• Access: ladders, a MEWP for high eaves, and out-of-hours working if the premises can't be disturbed.
• Make-good and decorating: patching drill holes and repainting where cable has been routed.
• Commissioning time: aiming and focusing cameras, recorder setup, remote access and user training.
• Signage and documentation: warning signs and the handover paperwork you'll need for your UK GDPR and ICO CCTV code obligations.

System-level pricing and payback are covered in the Cost & ROI guide, so none of that is repeated here.

Making a quote defensible

A quote you can hold someone to has four features:

• Assumptions and exclusions are written down, for example "excludes mains work" or "assumes existing containment is usable".
• Quantities come from the survey sheet: camera positions, cable metres and mounting heights.
• Provisional sums are flagged as such, not blended into a fixed price.
• It states how variations are priced and approved before the extra work starts.

Check too whether the equipment is in the installer's quote or bought by you. Clear Security sells equipment only, and your own installer or electrician fits it. Delivery is £5.99 per order, or free at £100.00 and over including VAT, and it is charged per order, not per item.

How do you commission and test a business CCTV system?

Commissioning means a signed test sheet showing every camera meets its surveyed purpose, and that recorded footage can be retrieved. A live picture on a monitor proves very little.

The sequence

1. Mount and aim each camera against the view recorded in the site survey.
2. Terminate and test every cable run before connecting equipment.
3. Power up, then assign IP addresses (IP cameras) or confirm channel numbers (a Turbo HD camera such as the Hilook 4 MP Fixed Mini Bullet THC-B140-R is identified by its recorder channel).
4. Set the time zone and NTP, so timestamps hold up as evidence.
5. Configure the recording mode: continuous, motion or scheduled.
6. Replace default passwords, create named user accounts, then set up remote access.

The test sheet

Give each camera one row with these columns:

• Camera ID
• Location
• View achieved against the surveyed purpose (face, plate, overview)
• Night-time check, done after dark or with the lights as they will be in use
• IP address or channel
• Sign-off (initials and date)

Retention and export

Work out the expected retention first: usable disk capacity divided by the combined daily recording rate of all cameras. Then check the oldest footage on the disk. If it is far short of the calculated days, a bitrate, frame rate or recording mode setting is wrong.

Finally, export a clip with its footage player, then play it on a separate computer. The person who will actually handle incidents should do this during handover. Evidence that only the installer can retrieve is a gap in the system.

What belongs in the handover pack?

A handover pack should let the client's own staff operate, check and maintain the system without phoning the installer. Aim for a folder, printed and digital, holding these items.

• As-built plan and camera schedule: a marked-up floor plan showing where each camera actually went, with a schedule giving location, lens or field of view, and what each camera is meant to see.
• Cable and port map: which cable run lands on which patch point and which switch port, labelled to match the site.
• Completed test sheets: per-camera results recorded at commissioning, so a later fault can be compared against a known-good baseline.
• Recorder and switch details: model, location, IP addressing, storage fitted and the retention the system was set up for.
• Credentials: held in a password manager or sealed record, never typed into the pack in plain text.
• Warranty and datasheet references: purchase dates, plus the datasheet or installation guide for each product. A camera such as the Hilook 4 MP Fixed Mini Bullet Camera THC-B140-R should be fitted by the customer's own electrician or installer to its guide.
• Maintenance and review schedule: who checks views, clocks and recordings, and when the setup is next reviewed.

Compliance paperwork

Add a copy of the signage plan showing where signs sit at the points of entry to monitored areas, plus a privacy notice and a written CCTV policy. Our signage and CCTV law guides cover UK GDPR and the ICO code in detail, so they are not repeated here.

Obligations differ by controller type and by what the cameras are used for. Whether a DPIA is needed depends on the circumstances, so record the decision either way.

Related products

Related products from our own range:

• Hilook 4 MP Fixed Mini Bullet Camera THC-B140-R — 4MP Turbo HD mini bullet camera for home and business CCTV, with a fixed view for entrances and corridors. Prices include VAT. Free UK delivery over £100.
• Hilook 3 MP Fixed Mini Bullet Camera THC-B230-R — 3 MP Turbo HD bullet camera for entrances and corridors. Needs a compatible Turbo HD DVR to record. Prices include VAT. Free UK delivery over £100.