Company lists · Data refreshed September 2026

Top 25 Enterprise communication solutions providers based in the United Kingdom

Name: Enterprise communication solutions providers 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 385 companies tracked

RevenueBase identified 385 enterprise communication solutions providers headquartered in the United Kingdom as of September 2026 and tracks 6,185 professional contacts across them, including 2,041 with verified work emails. London is the largest hub.

This list covers enterprise communication solutions providers 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

385Companies

6,185Contacts tracked

2,041Verified emails

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The 25 largest enterprise communication solutions providers based in the United Kingdom

Ranked by team size

Top 25 of 385 enterprise communication solutions providers 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 communication solutions providers: 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	GAMMA	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,568 contacts →
	Strong evidence “Gamma Communications is a leading provider of technology-based communication solutions across Europe.” Source: RevenueBase Database · checked Sep 28, 2026
2	Maintel Azzurri Communications	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	186 contacts →
	Strong evidence “Maintel is a leading systems integrator and managed services provider, delivering effortless communications solutions to a broad spectrum of businesses in the UK and…” Source: RevenueBase Database · checked Sep 28, 2026
3	Radius Connect Solutions	Strong evidence	Crewe, United KingdomHQ checked Sep 28, 2026	201-500	122 contacts →
	Strong evidence “Radius Connect Solutions is an award-winning independent “total communications” solution provider.” Source: RevenueBase Database · checked Sep 28, 2026
4	Tela Technology	Strong evidence	Hampton-in-arden, United KingdomHQ checked Sep 28, 2026	51-200	111 contacts →
	Strong evidence “We provide communication solutions and IT business services to businesses, big and small, to help your business grow.” Source: RevenueBase Database · checked Sep 28, 2026
5	Bicom Systems	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	90 contacts →
	Partial evidence “Made for businesses of all sizes, Bicom Systems revolutionizes communications by providing PBXware, the world's most unified turnkey open standards hosted telephony platform, plus…” Source: RevenueBase Database · checked Sep 28, 2026
6	Sipcom	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	86 contacts →
	Indirect evidence “Sipcom exists to make you the hero of your business narrative by turning complexity into clarity.” Source: RevenueBase Database · checked Sep 28, 2026
7	Gradwell	Strong evidence	Bath, United KingdomHQ checked Sep 28, 2026	51-200	85 contacts →
	Strong evidence “Gradwell Communications Ltd are a leading cloud communications solutions provider with a focus on small to medium-sized businesses (SMEs).” Source: RevenueBase Database · checked Sep 28, 2026
8	ICS Communications	Indirect evidence	Camberley, United KingdomHQ checked Sep 28, 2026	11-50	75 contacts →
	Indirect evidence “Contact an expert now: 0800 9 77 88 99 Specialists in providing businesses with telecoms, data and energy since 1989.” Source: RevenueBase Database · checked Sep 28, 2026
9	Telappliant	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	67 contacts →
	Partial evidence “Telappliant is an award-winning VoIP and cloud communications provider.” Source: RevenueBase Database · checked Sep 28, 2026
10	AURA	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	63 contacts →
	Strong evidence “Aura helps global enterprises streamline communications, customer experience and AI.” Source: RevenueBase Database · checked Sep 28, 2026
11	Nebula	Strong evidence	Guildford, United KingdomHQ checked Sep 28, 2026	51-200	62 contacts →
	Strong evidence “Nebula is a leading SaaS provider of workplace communications software, delivering powerful, secure, and adaptable solutions and applications for voice, messaging, customer…” Source: RevenueBase Database · checked Sep 28, 2026
12	Enconvo UK	Partial evidence	Telford, United KingdomHQ checked Sep 28, 2026	51-200	61 contacts →
	Partial evidence “We’re a leading unified communications provider supplying over 2 million users with the technology they need to work their magic.” Source: RevenueBase Database · checked Sep 28, 2026
13	Nice Network	Partial evidence	Sunderland, United KingdomHQ checked Sep 28, 2026	11-50	59 contacts →
	Partial evidence “We are B2B Telecom & IoT solution providers.” Source: RevenueBase Database · checked Sep 28, 2026
14	Windsor Telecom	Indirect evidence	Camberley, United KingdomHQ checked Sep 28, 2026	51-200	57 contacts →
	Indirect evidence “Windsor Telecom believes that technology should be easy and enjoyable.” Source: RevenueBase Database · checked Sep 28, 2026
15	Cellular Solutions	Strong evidence	Sunderland, United KingdomHQ checked Sep 28, 2026	n/a	56 contacts →
	Strong evidence “Established in 1995, Cellular Solutions NE, now part of Communications Plus, is a trusted business telecoms provider supporting organisations across the North East and throughout…” Source: RevenueBase Database · checked Sep 28, 2026
16	The ONE Point	Partial evidence	Hull, United KingdomHQ checked Sep 28, 2026	51-200	53 contacts →
	Partial evidence “The "whole" in one solution for your business telecommunications, mobile phones, broadband, I.T.” Source: RevenueBase Database · checked Sep 28, 2026
17	Reality Solutions	Strong evidence	Kingston Upon Hull, United KingdomHQ checked Sep 28, 2026	11-50	50 contacts →
	Strong evidence “Reality Solutions Limited is an independent provider of IT, communications services and financial business software solutions to corporate enterprises, SMEs and public sector…” Source: RevenueBase Database · checked Sep 28, 2026
18	Microtalk	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	45 contacts →
	Partial evidence “Microtalk: Global Communications Made Simple For over 15 years, Microtalk has delivered reliable voice, messaging, and cloud communications to businesses worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
19	VQ Communications	Indirect evidence	Chippenham, United KingdomHQ checked Sep 28, 2026	51-200	44 contacts →
	Indirect evidence “Our software and expertise put you on the fast-track to modern, self-hosted conferencing with Cisco.” Source: RevenueBase Database · checked Sep 28, 2026
20	Amillan Limited	Strong evidence	Solihull, United KingdomHQ checked Sep 28, 2026	51-200	42 contacts →
	Strong evidence “Amillan is a communications integrator that delivers solutions to make your organisation perform better.” Source: RevenueBase Database · checked Sep 28, 2026
21	SCG Corporate	Strong evidence	Reigate, United KingdomHQ checked Sep 28, 2026	11-50	34 contacts →
	Strong evidence “Class Networks was acquired by SCG in March 2021, and we have now joined Southern Communications Corporate Solutions, rebranding as SCG Corporate.” Source: RevenueBase Database · checked Sep 28, 2026
22	Mtech Communications Limited	Partial evidence	Bournemouth, United KingdomHQ checked Sep 28, 2026	51-200	33 contacts →
	Partial evidence “At Mtech, we pride ourselves in taking an honest view of your current telecoms solution, if needed we will demonstrate how our package not only simplifies your set up, with the…” Source: RevenueBase Database · checked Sep 28, 2026
23	Your Comms Group	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	33 contacts →
	Indirect evidence “Your Comms Group: Connecting Beyond Words.” Source: RevenueBase Database · checked Sep 28, 2026
24	Lister Unified Communications	Partial evidence	Stonehouse, United KingdomHQ checked Sep 28, 2026	11-50	32 contacts →
	Partial evidence “At Lister Unified Communications we understand that everyone’s business telephone requirements are different.” Source: RevenueBase Database · checked Sep 28, 2026
25	Pinnaca	Partial evidence	Slough, United KingdomHQ checked Sep 28, 2026	51-200	32 contacts →
	Partial evidence “We are a leading worldwide provider of cloud-based and customer hosted managed visual communication and collaboration services.” 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 communication solutions providers. 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 communication solutions providers.
Partial evidence: Its own public description names part of enterprise communication solutions providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise communication solutions providers. 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 385 enterprise communication solutions providers based in the United Kingdom

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Enterprise communication solutions providers based in the United Kingdom at a glance

As of Sep 28, 2026

33.0%Verified-email coverage

16.1Average contacts per company

11-50Median size (employees)

20.0%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

158

11-50

166

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 385 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 communication solutions providers, 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 communication solutions providers”. 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 communication solutions providers), 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 communication solutions providers, 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, 2,041 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 communication solutions providers by metro

Enterprise communication solutions providers in London77

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 communication solutions providers, 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 communication solutions providers are there based in the United Kingdom?

RevenueBase identified 385 enterprise communication solutions providers 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?

GAMMA, headquartered in London, tops this list with the largest team on record.

Which city has the most enterprise communication solutions providers?

London leads with 77 headquartered companies, followed by Birmingham (9) and Bristol (6).

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 2,041 verified decision-maker contacts tracked across these 385 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.

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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.