Company lists · Data refreshed September 2026
Top 22 Fiber optic testing and certification companies based in the United Kingdom
RevenueBase identified 78 fiber optic testing and certification companies headquartered in the United Kingdom as of September 2026 and tracks 438 professional contacts across them, including 141 with verified work emails. London is the largest hub.
This list covers fiber optic testing and certification companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 22 largest fiber optic testing and certification companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 61 contacts → | ||||
Indirect evidence “With decades of experience, the close-knit team at TREND Networks (Formerly IDEAL Networks) understands the challenges that data cable installers, network technicians and systems…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 55 contacts → | ||||
Strong evidence “BASEC Group Limited, a part of Kiwa, is a global leader in product testing and certification services for power, energy, data/signal cables and ancillary products, in addition to…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 25 contacts → | ||||
Partial evidence “Our in house fibre optic cable installation engineers have a wealth of experience in carrying out optical fibre cable installations, diagnostics and repairs in the Hampshire…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 19 contacts → | ||||
Strong evidence “Fibre Optic Installation & Testing Specialists - FTTP Surveyors - UG/OH Cable Installation - Fault Finding - Maintaining Communications Networkse” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 18 contacts → | ||||
Partial evidence “Certified & High quality Copper & Fibre Optic Passive Structured Cabling - approved by Telecom Operators & Data Centres GPON - FTTH - Data Centre Solutions TELTRONIX was created…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 17 contacts → | ||||
Partial evidence “Fibreplus Ltd's objective is to raise the standard of service covering fibre optic training, support and equipment.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 11 contacts → | ||||
Partial evidence “Build Check was established in 2004 and gone from strength-to-strength becoming a leading provider in the UK and Europe for testing services within the construction and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 10 contacts → | ||||
Indirect evidence “Status Network Solutions has over 15 combined years of structured cabling experience.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 9 contacts → | ||||
Partial evidence “PFO is a world leader in the design and manufacture of optoelectronics test instruments for characterisation of Optical Fiber.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 9 contacts → | ||||
Partial evidence “McHugh Comms Limited is a small business based in Leeds, West Yorkshire, the company has over 30 years of experience specialising in delivery of high-quality fibre optic…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 8 contacts → | ||||
Partial evidence “Established in 1993, UTEL is a UK-based business that specialises in planning, testing, validating and monitoring telecoms networks worldwide.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 6 contacts → | ||||
Indirect evidence “We are a telecommunication company.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 5 contacts → | ||||
Partial evidence “Our extensive knowledge in Fibre Optics sees us deploy a range of services from survey & project management, civil works & ducting, cabling & fibre installation, jointing &…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 contacts → | ||||
Partial evidence “For nearly 20 years, Fibre Optics Training UK has been developing the skilled professionals behind today’s fibre networks.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 contacts → | ||||
Indirect evidence “Optical Connections is at the forefront of developments in the fibre industry, bringing you the latest news, analysis and opinion from independent journalists and industry thought…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3 contacts → | ||||
Partial evidence “England based Fibre Optic Repair and Test Specialists, Seismic equipment repair, Operating On and Offshore” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 2 contacts → | ||||
Indirect evidence “GDS supply a wide range of optical equipment from fibre patch cords (Single and Multi Mode) made in the UK and to a high specification, connectors and cable to fibre tooling from…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2 contacts → | ||||
Partial evidence “We are a new name in the fibre optic and communications cabling training market but with the quality and expertise from 25 years worth of experience in the fibre optic industry.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2 contacts → | ||||
Partial evidence “West Installations are a structured cabling company based in Surrey specialising in Cat5e, Cat6, Cat6a and fibre optic cabling.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1 contacts → | ||||
Partial evidence “Opticus will solve your fibre optic problems.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1 contacts → | ||||
Strong evidence “We offer our clients complete fibre solutions from design, installation, completion testing and certification, to fibre maintenance.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1 contacts → | ||||
Partial evidence “The Fibre optic termination services we provide not only cater to security systems but to any Ethernet network on site.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: fiber optic testing and certification companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names fiber optic testing and certification companies.
- Partial evidence
- Its own public description names part of fiber optic testing and certification companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name fiber optic testing and certification companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 22 of 78 fiber optic testing and certification companies based in the United Kingdom
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Fiber optic testing and certification companies based in the United Kingdom at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 78 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among fiber optic testing and certification companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “fiber optic testing and certification companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names fiber optic testing and certification companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among fiber optic testing and certification companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 141 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names fiber optic testing and certification companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many fiber optic testing and certification companies are there based in the United Kingdom?
RevenueBase identified 78 fiber optic testing and certification companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Trend Networks, headquartered in High Wycombe, tops this list with the largest team on record.
Which city has the most fiber optic testing and certification companies?
London leads with 3 headquartered companies, followed by Milton Keynes (3) and Northampton (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 141 verified decision-maker contacts tracked across these 78 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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