Company lists · Data refreshed November 2026

Top 25 Data communications contractors based in the United Kingdom

RevenueBase identified 1,297 company matches for data communications contractors associated with the United Kingdom as of November 2026 and tracks 21,801 professional contacts across them, including 7,339 with verified work emails. London is the largest hub.

This list covers company matches for data communications contractors associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,297Companies
21,801Contacts tracked
7,339Verified emails
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The 25 largest data communications contractors based in the United Kingdom

Ranked by team size
Top 25 of 1,297 company matches for data communications contractors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPrescot, United KingdomHQ recorded Nov 6, 20261,001-5,0001,373 contacts →

Exact match

“At MJ Quinn we believe in creating great connections, with our customers, our people and our world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Nov 6, 2026n/a1,265 contacts →

Exact match

“Originally set up in 1933 by Joseph Brand as an electrical contracting and repair business in Margaret Street W1, the company today still operates today with the same guiding…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWembley, United KingdomHQ recorded Nov 6, 20261,001-5,0001,204 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000681 contacts →

Exact match

“Innovation is at the core of Exponential-e, and has been since our inception in 2002.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchWarrington, United KingdomHQ recorded Nov 6, 2026501-1,000555 contacts →

Exact match

“WHP is one of the UK's leading suppliers of network infrastructure services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500457 contacts →

Exact match

“Redstone is now part of RedstoneConnect PLC.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchDerby, United KingdomHQ recorded Nov 6, 2026501-1,000421 contacts →

Exact match

“Comex is an established major strategic partner of choice within the telecommunication sector, across the United Kingdom and Ireland, offering an end to end solution.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500370 contacts →

Exact match

“Maintel is a communications managed services provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchStevenage, United KingdomHQ recorded Nov 6, 2026501-1,000306 contacts →

Exact match

“Morrison Telecom Services is focused on the design, build and maintenance of telecom infrastructure for key clients in the fixed telecom market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMiddlesbrough, United KingdomHQ recorded Nov 6, 2026201-500280 contacts →

Exact match

“Map Group (UK) is one of the leading independent providers of professional technology services to the UK communications sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSt Ives, United KingdomHQ recorded Nov 6, 2026201-500278 contacts →

Exact match

“Magdalene provides comprehensive independent solutions which address the individual needs of our customers throughout the Telecommunications Industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchManchester, United KingdomHQ recorded Nov 6, 2026201-500252 contacts →

Exact match

“Sudlows is a multi-award winning Critical Infrastructures, Enterprise Services and Facilities Management specialist which provides a full range of technical services for…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHarlow, United KingdomHQ recorded Nov 6, 2026201-500223 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchPortsmouth, United KingdomHQ recorded Nov 6, 2026201-500211 contacts →

Exact match

“Aerial Direct are an award-winning, UK-based, managed communications expert.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSelkirk, United KingdomHQ recorded Nov 6, 2026201-500186 contacts →

Exact match

“Founded and based in the Scottish Borders, QubeGB operates nationwide, covering 98% of the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchCoalisland, United KingdomHQ recorded Nov 6, 2026501-1,000178 contacts →

Exact match

“Viberoptix delivers frontline services to fibre networks providers across the UK and Ireland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500167 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchTavistock, United KingdomHQ recorded Nov 6, 2026201-500164 contacts →

Exact match

“Beacon Comms is the trading name of Beacon Communication Services Ltd.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSheffield, United KingdomHQ recorded Nov 6, 2026201-500164 contacts →

Exact match

“We connect people, technologies and locations, enabling service providers, OEM's and internet service providers to deploy, scale, support and maintain network infrastructure…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMarlow, United KingdomHQ recorded Nov 6, 202651-200162 contacts →

Exact match

“MLL has over 25 years’ experience in designing, building and managing secure networks for the Public Sector, including local government, health, emergency services, education and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSnitterfield, United KingdomHQ recorded Nov 6, 2026201-500141 contacts →

Exact match

“CASS (Cabling and Splicing Services) is a services driven telecommunications specialist business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBuntingford Herts, United KingdomHQ recorded Nov 6, 202651-200122 contacts →

Exact match

“OFFICIAL ACCOUNT* Datalec Precision Installations provides world-class data centre design, build, and installation services that leverage unique technical expertise, including…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMurray Road, United KingdomHQ recorded Nov 6, 202651-200122 contacts →

Exact match

“FLR Spectron is an award-winning, integrated solutions provider with over two decades of experience in the Telecoms, Mobile, Interiors, Technology, Cooling and Fire and Security…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchStockton On Tees, United KingdomHQ recorded Nov 6, 2026201-500111 contacts →

Exact match

“LJJ formed in 2001 as a private limited company and is a multi-disciplined organisation capable of completing major mechanical, electrical and public health service contracts in a…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchReading, United KingdomHQ recorded Nov 6, 202651-200111 contacts →

Exact match

“With operations that span the United Kingdom, Teligent Limited is a dynamic infrastructure delivery and management consultancy servicing the biggest names in the UK…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,297 data communications contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 7,339 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Data communications contractors based in the United Kingdom at a glance

As of Nov 6, 2026
33.7%Verified-email coverage
16.8Average contacts per company
11-50Median size (employees)
9.9%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
608
11-50
451
51-200
151
201-500
33
501-1,000
11
1,001-5,000
4
5,001-10,000
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 1,297 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “data communications contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 7,339 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “data communications contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many data communications contractors are there based in the United Kingdom?

RevenueBase identified 1,297 company matches for data communications contractors associated with the United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

MJ Quinn tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most data communications contractors?

London leads with 128 company records, followed by Birmingham (29) and Leeds (24).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 7,339 professional contacts with verified work emails tracked across these 1,297 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.