Fibre testing and certification
Loss tests and OTDR traces for fibre links.
Explore fibre testing →Office cabling
Cabling and network audits that find outdated, overloaded or misconfigured infrastructure before it affects your business.
Copper certified with Fluke, fibre checked with OTDR.
Bad cabling, bottlenecks and security gaps pinpointed.
Cabling-related health and safety issues reported too.
10GbE network around 60+ traders, zero disruption.
Network cabling audit London
A data cabling and network audit is a systematic assessment of your physical cabling. ACCL engineers test cable performance, document cable runs and patch assignments, find faults and safety risks, and check compliance with industry standards. You get a detailed report with prioritised recommendations and their costs, across London, Kent, Surrey and the South East.
Loss tests and OTDR traces for fibre links.
Explore fibre testing →Fix the patching and labels the audit finds.
Explore cabinet tidy →Repair the faulty links the audit finds.
Explore cabling repair →Cabling for a move, planned from the audit.
Explore office moves →Acquisitions, moves and upgrades
Audits find hidden faults before they cause outages and document infrastructure that may have no records.
Know what cabling and network you are taking on, what works and what it will cost to fix.
Record what the current site has, and what the new premises need, before the move is planned.
Taking over a building with no records? The audit maps what is there.
Outdated cables, poor installation or the wrong cable choice can all hit performance.
Evidence of compliance with industry standards for insurers and auditors.
The audit report gives you the data to plan it, with costs.
Book a Free Site SurveyWhat the audit involves
Our engineers audit your whole facility, focusing on the communications room and employee workspaces.
We agree the scope, the number of cable runs and sites, and send a programme of works.
We check the comms room, cabinets and workspaces, assess whether equipment needs replacing and identify safety hazards.
Copper is tested with calibrated Fluke equipment and fibre with OTDR, mostly on live networks without affecting connectivity.
We record cable runs, patch assignments, cable schedules and patch panel maps.
You receive a detailed report with faults, compliance status, and prioritised recommendations with their costs.
What you get
Everything you need to plan remediation, a move or an upgrade.
Cable testing services
Physical-link certification shows whether the tested cabling met the selected limit at the time of the test. It is the evidence an audit, a warranty or an acceptance check relies on.
Certification alone cannot guarantee network performance under every operating condition. Where end-to-end application, device or load testing is included, it is scoped and reported separately. Our engineers will explain any test result in clear, non-technical terms.
Cabling audits explained
A cabling and network audit is a systematic assessment of your physical cabling infrastructure. It includes testing cable performance, documenting cable runs and patch assignments, identifying faults, verifying compliance with industry standards and recommending improvements or upgrades.
A reliable IT infrastructure depends on the cabling underneath it. An audit pinpoints faulty cabling, network bottlenecks and security vulnerabilities, along with health and safety risks in the cabling set-up, so you can prevent costly downtime and plan for growth. This audit service forms part of ACCL’s wider office cabling capability.
Is your network slow or frequently disrupted? Are patch cords missing, or is the cabling a tangled mess? Those are signs it is time for a professional data cabling audit. Outdated cables, improper installation and poor cable choices can all severely affect network performance. The audit finds these problems and sets out the fixes, so you spend only on the work your data cabling actually needs.
Audits are particularly valuable after an acquisition, an office relocation or when you take over premises with unknown cabling. They document infrastructure that may have no records, show what condition it is in and identify hidden faults before they cause outages. The report then gives you costed recommendations to budget for, rather than surprises after the deal or the move.
Our experienced cable engineers audit your entire facility, with the communications room and employee workspaces as the key areas. On site, an audit takes from a few hours to a whole day depending on your premises; larger multi-floor or multi-site audits take several days. We assess whether existing equipment needs replacing, identify potential safety hazards and evaluate how well the current cabling system and network work.
After the audit, you receive a detailed report with recommendations for improvement and their associated costs.
When a data installation is complete, our engineers move on to testing. Physical-link certification establishes whether the tested cabling met the selected limit at the time of test. Where end-to-end application, device or load testing is included, it is scoped and reported separately, because cabling certification alone cannot guarantee network performance under every operating condition. Our guide to Fluke cable testing and certification explains the process.
When testing data transmission circuits or wireless links such as laser and microwave beams, we send large data packets above typical usage levels, to check the network can handle demanding applications such as voice and video. After testing, we provide full documentation, which is submitted to the system manufacturer for a 25-year manufacturer cabling warranty where the installation qualifies. Our engineers will explain any test result in clear, non-technical terms.
Our testing certifies links to the agreed test limit. On qualifying copper projects, ACCL can also apply its own defined headroom expectation, which gives a consistent benchmark for future audits and inspections. All test results are supplied in industry-standard format, so another engineer can read and compare them later.
The audit report tells you what to do next. Faulty links can go to our data cabling repair team, and congested or unlabelled cabinets to a data cabinet tidy. If you are moving, the findings feed into an office relocation or a data centre relocation. Our guide on when to upgrade your network cabling helps with the bigger decision, and the network switch capacity calculator estimates access-switch quantities, usable ports, spare capacity and uplinks.
Cost depends on the number of cable runs, the size of the building, the number of floors and sites, how much testing is in scope, access and working hours, and the documentation you need.
We agree the scope on an initial call, provide a programme of works and send an itemised quote before the audit starts.
ACCL has worked in the UK cabling industry since 1997, supporting commercial clients across many sectors. Our engineers give advice tailored to your site and prioritise cost-effective solutions without compromising on quality. We cover London, Kent, Surrey and the wider South East from our offices in the City of London and Orpington.
Before you book
A cabling and network audit is a systematic assessment of your physical cabling infrastructure. It includes testing cable performance, documenting cable runs and patch assignments, identifying faults, verifying compliance with industry standards and recommending improvements or upgrades. You receive a detailed report with prioritised recommendations and their costs, so you can plan the work.
A network audit identifies hidden faults before they cause outages, documents infrastructure that may have no records, verifies compliance for insurance or accreditation purposes, and gives you the data to plan upgrades or office moves. It also reports cabling-related health and safety risks, so you can deal with them before they cause an incident.
Because you need to know what you are taking on. An audit after an acquisition, before a relocation or when taking over premises with unknown cabling records what is installed, what passes testing and what is labelled. The costed recommendations let you budget for remediation before the deal or the move, rather than finding faults afterwards.
ACCL uses calibrated Fluke testing equipment for copper cable certification and OTDR (optical time-domain reflectometer) equipment for fibre optic testing. All test results are provided in industry-standard format, so they can be read and compared by another engineer, your IT provider or an auditor later on.
Timescales depend on the number of cable runs, the building size and the scope of the audit. A small office audit can be completed in a day, while larger multi-floor or multi-site audits can take several days. ACCL provides a programme of works after the initial scoping call, so you know the timings before we start.
Most audit activities are non-disruptive. Cable testing can be carried out on live networks without affecting connectivity. Where any test needs a temporary disconnection, it is agreed with you in advance and scheduled around your operations, so the business keeps running while the audit takes place.
You receive a detailed audit report including cable test results, fault identification, infrastructure documentation such as cable schedules and patch panel maps, compliance status, health and safety findings, and prioritised recommendations for remediation or upgrades with their associated costs. Our engineers will explain any result in clear, non-technical terms.
ACCL provides cabling and network audit services across London, Kent, Surrey and the wider South East, from our offices in the City of London (EC3V) and Orpington, Kent (BR5). Multi-site audits can cover several offices under one programme of works, with the same reporting format for every site.
Cost depends on the number of cable runs, the building size, the number of floors and sites, the testing in scope, access and the documentation you need. We do not quote a fixed price before scoping. After an initial call or free site survey, we send a programme of works and an itemised quote before the audit starts.

The team behind your audit
Founded in 1997, ACCL installs, tests and audits copper and fibre networks through one accountable team. Talk to us about your site and schedule an audit that shows exactly where your network stands.
Wayne Connors founded ACCL in 1997 and has led our commercial cabling projects ever since, including the network audit and cabinet consolidation across the University of Oxford museums and the live trading floor for Sumitomo Corporation Europe. We are a member of the London Chamber of Commerce and Industry.
Cabling and network audit
Tell us about the site, the number of floors and what you need the audit for. One of our own engineers scopes it with you at no cost and with no obligation.
Excellent · 60+ Google reviews · Founded 1997 · £10m liability cover
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Active Communication Company Ltd trades as ACCL, ACCL Data Cabling London and ACCL Data Cabling Kent · Commercial data cabling and network infrastructure specialists