Company lists · Data refreshed September 2026

Top 25 Enterprise networking companies based in the United Kingdom

Name: Enterprise networking companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 460 companies tracked

RevenueBase identified 460 enterprise networking companies headquartered in the United Kingdom as of September 2026 and tracks 6,943 professional contacts across them, including 2,894 with verified work emails. London is the largest hub.

This list covers enterprise networking 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 28, 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 28, 2026 86% judged on-target in blind review

460Companies

6,943Contacts tracked

2,894Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest enterprise networking companies based in the United Kingdom

Ranked by team size

Top 25 of 460 enterprise networking companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise networking companies: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Kelly Group	Indirect evidence	Wembley, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,053 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 28, 2026
2	Exponential-E	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	667 contacts →
	Indirect evidence “Innovation is at the core of Exponential-e, and has been since our inception in 2002.” Source: RevenueBase Database · checked Sep 28, 2026
3	ONNEC	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	585 contacts →
	Indirect evidence “Onnec is a leading partner for IT Infrastructure design, installation and operational support services.” Source: RevenueBase Database · checked Sep 28, 2026
4	Elevate	Indirect evidence	Manchester, United KingdomHQ checked Sep 28, 2026	201-500	242 contacts →
	Indirect evidence “Elevate makes seamless, secure intelligent networks as effortless as they should be.” Source: RevenueBase Database · checked Sep 28, 2026
5	Mayflex	Indirect evidence	Birmingham, United KingdomHQ checked Sep 28, 2026	201-500	221 contacts →
	Indirect evidence “Driven to deliver more.” Source: RevenueBase Database · checked Sep 28, 2026
6	MLL Telecom	Indirect evidence	Marlow, United KingdomHQ checked Sep 28, 2026	51-200	165 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
7	Block Solutions	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	141 contacts →
	Indirect evidence “Block was created for one reason: to empower people and inspire change through technology.” Source: RevenueBase Database · checked Sep 28, 2026
8	IDEAL	Partial evidence	Brighton, United KingdomHQ checked Sep 28, 2026	51-200	95 contacts →
	Partial evidence “Ideal specialise in Networking, Connectivity and Advanced Wireless, Cyber Security (SASE), Cloud, Collaboration & Safe AI Adoption.” Source: RevenueBase Database · checked Sep 28, 2026
9	Linbrooke Services LTD	Indirect evidence	Sheffield, United KingdomHQ checked Sep 28, 2026	201-500	89 contacts →
	Indirect evidence “We connect people, technologies and locations, enabling service providers, OEM's and internet service providers to deploy, scale, support and maintain network infrastructure…” Source: RevenueBase Database · checked Sep 28, 2026
10	KCP Network	Indirect evidence	Bracknell, United KingdomHQ checked Sep 28, 2026	51-200	81 contacts →
	Indirect 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 28, 2026
11	Switchshop Limited	Partial evidence	Kimpton, United KingdomHQ checked Sep 28, 2026	51-200	79 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 28, 2026
12	ISG Tech	Partial evidence	Nelson, United KingdomHQ checked Sep 28, 2026	201-500	76 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 28, 2026
13	Installation Technology Limited	Indirect evidence	Reading, United KingdomHQ checked Sep 28, 2026	51-200	74 contacts →
	Indirect evidence “Installation Technology has over thirty years of experience in providing technical solutions in advanced communication systems.” Source: RevenueBase Database · checked Sep 28, 2026
14	ADM Computing	Indirect evidence	Canterbury, United KingdomHQ checked Sep 28, 2026	51-200	72 contacts →
	Indirect evidence “ADM Computing is an independent, family-owned IT services provider headquartered in Canterbury, supporting organisations across Kent, London and the South East since 1984.” Source: RevenueBase Database · checked Sep 28, 2026
15	Sytel Reply	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	68 contacts →
	Indirect evidence “Sytel Reply is the Reply Company focused on Networks and Security.” Source: RevenueBase Database · checked Sep 28, 2026
16	Leviton Network Solutions Europe	Indirect evidence	Glenrothes, United KingdomHQ checked Sep 28, 2026	201-500	63 contacts →
	Indirect evidence “Leviton Network Solutions Europe supports commercial and residential networks with high-performance network infrastructure.” Source: RevenueBase Database · checked Sep 28, 2026
17	Insoft Services	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	60 contacts →
	Partial evidence “Insoft Services specializes in elevating IT infrastructure resilience and security, focusing on the critical domains of IT networking, data center infrastructure, cybersecurity…” Source: RevenueBase Database · checked Sep 28, 2026
18	Specialist Network Operations	Indirect evidence	Oswestry, United KingdomHQ checked Sep 28, 2026	51-200	54 contacts →
	Indirect evidence “SNO is a specialist network operations and security partner, helping organisations design, secure, and manage the networks they rely on every day.” Source: RevenueBase Database · checked Sep 28, 2026
19	MLR Networks LTD	Strong evidence	Runcorn, United KingdomHQ checked Sep 28, 2026	11-50	53 contacts →
	Strong 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 28, 2026
20	FNG Fortitude Nicsa Global LTD	Indirect evidence	Derby, United KingdomHQ checked Sep 28, 2026	51-200	51 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 28, 2026
21	Electranet UK Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	49 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 28, 2026
22	D-Link Europe	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	46 contacts →
	Partial evidence “D-Link helps you connect to more of everything with our innovative approach to computer networking.” Source: RevenueBase Database · checked Sep 28, 2026
23	Borwood	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	43 contacts →
	Indirect evidence “At Borwood, we believe that seamless, always-on communication is the foundation of global business success.” Source: RevenueBase Database · checked Sep 28, 2026
24	Vaioni Group Limited	Indirect evidence	Salford, United KingdomHQ checked Sep 28, 2026	11-50	43 contacts →
	Indirect evidence “Vaioni is a multi-award-winning network operator, delivering mission critical digital transformation solutions.” Source: RevenueBase Database · checked Sep 28, 2026
25	Select Technology	Indirect evidence	Paddock Wood, United KingdomHQ checked Sep 28, 2026	11-50	40 contacts →
	Indirect 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 28, 2026

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: enterprise networking 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 enterprise networking companies.
Partial evidence: Its own public description names part of enterprise networking companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise networking 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 25 of 460 enterprise networking companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,894 reachable decision-makers.

Free signup · no credit card

View the full list →

Enterprise networking companies based in the United Kingdom at a glance

As of Sep 28, 2026

41.7%Verified-email coverage

15.1Average contacts per company

1-10Median size (employees)

18.7%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

244

11-50

145

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 460 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 enterprise networking 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 “enterprise networking 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 enterprise networking 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 enterprise networking 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, 2,894 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 28, 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.

Enterprise networking companies by metro

Enterprise networking companies in London86

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 enterprise networking 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 enterprise networking companies are there based in the United Kingdom?

RevenueBase identified 460 enterprise networking 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?

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

Which city has the most enterprise networking companies?

London leads with 86 headquartered companies, followed by Leeds (9) and Manchester (9).

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 2,894 verified decision-maker contacts tracked across these 460 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 460 enterprise networking companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Enterprise networking companies by geography

Browse the directory

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.