Company lists · Data refreshed September 2026

Top 25 Commercial network contractors based in the United Kingdom

RevenueBase identified 605 commercial network contractors headquartered in the United Kingdom as of September 2026 and tracks 5,773 professional contacts across them, including 2,021 with verified work emails. London is the largest hub.

This list covers commercial network contractors 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 16, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review
605Companies
5,773Contacts tracked
2,021Verified emails
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The 25 largest commercial network contractors based in the United Kingdom

Ranked by team size
Top 25 of 605 commercial network contractors based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to commercial network contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceWembley, United KingdomHQ checked Sep 16, 20261,001-5,0001,053 contacts →

Indirect evidence

“Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.”

Source: RevenueBase Database · checked Sep 16, 2026
2Partial evidenceHarlow, United KingdomHQ checked Sep 16, 2026201-500205 contacts →

Partial evidence

“Part of the SCCI Group, SCCI Alphatrack designs, installs, and maintains connected building systems across social housing, commercial property, new builds, and public sector…”

Source: RevenueBase Database · checked Sep 16, 2026
3Indirect evidenceLondon, United KingdomHQ checked Sep 16, 2026201-500153 contacts →

Indirect evidence

“For 40 years, LMG has delivered secure, resilient and proven digital infrastructure solutions across the built environment.”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceLondon, United KingdomHQ checked Sep 16, 202651-200141 contacts →

Indirect evidence

“Block was created for one reason: to empower people and inspire change through technology.”

Source: RevenueBase Database · checked Sep 16, 2026
5Strong evidenceHitchin, United KingdomHQ checked Sep 16, 202651-200131 contacts →

Strong evidence

“Modern Networks helps commercial property owners and managing agents turn buildings into high-performing, tenant-ready assets.”

Source: RevenueBase Database · checked Sep 16, 2026
6Indirect evidenceOxfordshire, United KingdomHQ checked Sep 16, 202651-200112 contacts →

Indirect evidence

“Our mission is to excel in the design, installation and maintenance of the electro-technical systems that connect to create fit for purpose building environments.”

Source: RevenueBase Database · checked Sep 16, 2026
7Indirect evidencePortsmouth, United KingdomHQ checked Sep 16, 202651-20083 contacts →

Indirect evidence

“Connecting people, places, and possibilities through transformative workplace technology.”

Source: RevenueBase Database · checked Sep 16, 2026
8Partial evidenceBracknell, United KingdomHQ checked Sep 16, 202651-20081 contacts →

Partial evidence

“KCP | Network Solutions and Design | Software Development | Automation Since 2008 KCP built a legacy of trust with our global customers by becoming a leading provider of SMART…”

Source: RevenueBase Database · checked Sep 16, 2026
9Partial evidenceKimpton, United KingdomHQ checked Sep 16, 202651-20079 contacts →

Partial evidence

“Switchshop is a specialist designer, installer and provider of IT network equipment solutions and one of the UK's leading resellers of networking hardware.”

Source: RevenueBase Database · checked Sep 16, 2026
10Partial evidenceNelson, United KingdomHQ checked Sep 16, 2026201-50076 contacts →

Partial evidence

“ISG Tech is a market-leading provider of services for the design, deployment and management of enterprise network connectivity with over 35 years of experience.”

Source: RevenueBase Database · checked Sep 16, 2026
11Indirect evidenceReading, United KingdomHQ checked Sep 16, 202651-20074 contacts →

Indirect evidence

“Installation Technology has over thirty years of experience in providing technical solutions in advanced communication systems.”

Source: RevenueBase Database · checked Sep 16, 2026
12Strong evidenceGlenrothes, United KingdomHQ checked Sep 16, 2026201-50063 contacts →

Strong evidence

“Leviton Network Solutions Europe supports commercial and residential networks with high-performance network infrastructure.”

Source: RevenueBase Database · checked Sep 16, 2026
13Indirect evidenceLondon, United KingdomHQ checked Sep 16, 202651-20058 contacts →

Indirect evidence

“The Cabling Group provides robust and scalable structured cabling solutions, forming the backbone of modern workplace technology.”

Source: RevenueBase Database · checked Sep 16, 2026
14Partial evidenceRuncorn, United KingdomHQ checked Sep 16, 202611-5053 contacts →

Partial evidence

“We are an IT network infrastructure managed services provider delivering enterprise networking, wireless networks, structured cabling and security solutions to customers across…”

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidenceDerby, United KingdomHQ checked Sep 16, 202651-20051 contacts →

Indirect evidence

“Fortitude Nicsa Global (FNG) is a leading provider of comprehensive IT services, supporting businesses in over 160 countries with innovative, 24/7 solutions.”

Source: RevenueBase Database · checked Sep 16, 2026
16Indirect evidenceLondon, United KingdomHQ checked Sep 16, 202651-20049 contacts →

Indirect evidence

“Electranet’s mission is to be a preferred partner to the public and private sectors, bringing competitively priced, secure and innovative solutions to the market.”

Source: RevenueBase Database · checked Sep 16, 2026
17Partial evidenceLondon, United KingdomHQ checked Sep 16, 202651-20045 contacts →

Partial evidence

“Backbone Connect is a dynamic technology firm specialising in solving the unique technological challenges of commercial real estate.”

Source: RevenueBase Database · checked Sep 16, 2026
18Partial evidencePaddock Wood, United KingdomHQ checked Sep 16, 202611-5040 contacts →

Partial evidence

“Select Technology is one of the South East’s leading technology service providers, with 30 years of expertise in designing, implementing and supporting IT networks of all sizes.”

Source: RevenueBase Database · checked Sep 16, 2026
19Partial evidenceLondon, United KingdomHQ checked Sep 16, 202651-20039 contacts →

Partial evidence

“We are a leading IT installation company offering complete infrastructure solutions within data centre and commercial sectors.”

Source: RevenueBase Database · checked Sep 16, 2026
20Partial evidenceWeston-super-mare, United KingdomHQ checked Sep 16, 202651-20039 contacts →

Partial evidence

“Structured Cabling and Network Solutions that Power Your Progress”

Source: RevenueBase Database · checked Sep 16, 2026
21Partial evidenceDartford, United KingdomHQ checked Sep 16, 202611-5039 contacts →

Partial evidence

“Astro Communications are experts in solving business challenges through the design, deployment and management of end-to-end communications and networking solutions.”

Source: RevenueBase Database · checked Sep 16, 2026
22Indirect evidenceLeatherhead, United KingdomHQ checked Sep 16, 202611-5039 contacts →

Indirect evidence

“LAN2LAN is a specialist systems integration, installation and project management organisation focused on driving technologically innovative solutions that deliver intelligent…”

Source: RevenueBase Database · checked Sep 16, 2026
23Partial evidenceDroitwich, United KingdomHQ checked Sep 16, 202611-5036 contacts →

Partial evidence

“GGR Communications, a Cisco Premier Partner, offer the latest solutions and technologies for Managed Network Services, Wireless Networking, Unified Communications, Network and…”

Source: RevenueBase Database · checked Sep 16, 2026
24Partial evidenceGrays, United KingdomHQ checked Sep 16, 2026201-50035 contacts →

Partial evidence

“Excel builds, supports and optimises the IT infrastructure, networks and connectivity which drive global business performance.”

Source: RevenueBase Database · checked Sep 16, 2026
25Partial evidenceMelksham, United KingdomHQ checked Sep 16, 202651-20034 contacts →

Partial evidence

“Experts for Physical IT Installations Nationwide Whether building network cabinets, fitting devices, integrating complex IT systems, or installing professional IT infrastructure…”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 605 commercial network contractors based in the United Kingdom

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Commercial network contractors based in the United Kingdom at a glance

As of Sep 16, 2026
35.0%Verified-email coverage
9.5Average contacts per company
1-10Median size (employees)
10.9%Largest-city concentration · London
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
365
11-50
172
51-200
48
201-500
9
501-1,000
1
1,001-5,000
1

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 605 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 commercial network contractors, 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 “commercial network contractors”. 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 commercial network contractors), 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 commercial network contractors, 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, 2,021 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 16, 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.

Commercial network contractors by metro

  • Commercial network contractors in London66

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 commercial network contractors, 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 commercial network contractors are there based in the United Kingdom?

RevenueBase identified 605 commercial network contractors 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?

Kelly Group, headquartered in Wembley, tops this list with the largest team on record.

Which city has the most commercial network contractors?

London leads with 66 headquartered companies, followed by Bristol (12) and Leeds (11).

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 2,021 verified decision-maker contacts tracked across these 605 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 16, 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.