Company lists · Data refreshed September 2026

Top 25 Enterprise communication platform providers based in the United Kingdom

There are 80 enterprise communication platform providers headquartered in the United Kingdom (RevenueBase, September 2026). RevenueBase tracks 1,844 professional contacts across them, including 761 with verified work emails and 311 with mobile numbers. London is the largest hub.

This list covers enterprise communication platform 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, how directly it supports the match, and when it was last checked. Data refreshed September 2, 2026.

80Companies
1,844Contacts tracked
761Verified emails
311Mobile numbers
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The 25 largest enterprise communication platform providers based in the United Kingdom

Ranked by team size
Top 25 of 80 enterprise communication platform providers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 2, 2026. Evidence rates how directly each company's own description names enterprise communication platform providers: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContactsVerified emails
1
AlianzaPartial evidence

“Empowering service provider growth with the world’s most trusted Intelligent Communications Fabric.”

Source: company website · checked Sep 2, 2026
Enfield, United Kingdom501-1,000605293
2
CalltowerStrong evidence

“Since 2002, CallTower has been at the forefront of transforming global communication, emerging as a leader in enterprise-class cloud communication, collaboration, and CX solutions.”

Source: company website · checked Sep 2, 2026
London, United Kingdom201-500226128
3
VocovoPartial evidence

“VoCoVo is a globally recognised innovative retail team communication solutions provider, improving business efficiency and customer experience for some of the best-known tier 1…”

Source: company website · checked Sep 2, 2026
Cheltenham, United Kingdom51-200165107
4
ElementStrong evidence

“Element is a new type of communications platform.”

Source: company website · checked Sep 2, 2026
London, United Kingdom51-2008557
5
SipcomIndirect evidence

“Sipcom exists to make you the hero of your business narrative by turning complexity into clarity.”

Source: company website · checked Sep 2, 2026
London, United Kingdom501-1,0008428
6
NebulaPartial evidence

“Nebula is a leading SaaS provider of workplace communications software, delivering powerful, secure, and adaptable solutions and applications for voice, messaging, customer…”

Source: company website · checked Sep 2, 2026
Guildford, United Kingdom51-2006029
7
VQ CommunicationsIndirect evidence

“Our software and expertise put you on the fast-track to modern, self-hosted conferencing with Cisco.”

Source: company website · checked Sep 2, 2026
Chippenham, United Kingdom51-2004430
8
QuickbloxStrong evidence

“QuickBlox is a leading cloud communication platform helping businesses bring AI-driven chat, video, and automation into their digital products-quickly, securely, and at scale.”

Source: company website · checked Sep 2, 2026
London, United Kingdom11-503114
9
URBENIndirect evidence

“At Urben, we believe virtual collaboration should be seamless and empowering.”

Source: company website · checked Sep 2, 2026
St. Albans, United Kingdom11-502315
10
MeetingzoneIndirect evidence

“MeetingZone was set up in 2002 and has operations in the UK, Germany, USA, Nordics and Asia Pacific.”

Source: company website · checked Sep 2, 2026
Thame, United Kingdom51-200182
11
IpcortexPartial evidence

“With over 15 years’ experience in the ever-changing communications industry, IPCortex are proud to provide innovative communication systems and applications that help companies…”

Source: company website · checked Sep 2, 2026
Milton Keynes, United Kingdom11-50159
12
HEEDPartial evidence

“Heed is a leading provider of innovative communication solutions for the modern workplace.”

Source: company website · checked Sep 2, 2026
London, United Kingdom11-50154
13
Qwil MessengerPartial evidence

“Provide your clients with exceptional communication experience from prospect to long term client.”

Source: company website · checked Sep 2, 2026
London London, United Kingdom11-50124
14
MeetupcallPartial evidence

“Meetupcall combines audio and video conferencing into one single, fully bespoke platform that is styled to represent your brand, allowing you to host remote meetings, your way.”

Source: company website · checked Sep 2, 2026
Doncaster, United Kingdom11-5091
15
The Technology GroupPartial evidence

“The Technology Group are a managed communications provider, helping businesses and organisations to better communicate with their customers and teams, by embracing voice over IP…”

Source: company website · checked Sep 2, 2026
London, United Kingdom11-5085
16
SipsynergyPartial evidence

“sipsynergy is the new standard in reliable, high quality hosted communications and collaboration.”

Source: company website · checked Sep 2, 2026
Fareham, United Kingdom11-5076
17
Tecinteractive LTDIndirect evidence

“At TecInteractive our mission is to help people work more collaboratively together using smart and simple workplace tech solutions.”

Source: company website · checked Sep 2, 2026
United Kingdom11-5074
18
Interact Technology LTDPartial evidence

“Interact Technology has extensive experience derived from over 20 years in providing business to business communications.”

Source: company website · checked Sep 2, 2026
London, United Kingdom11-5072
19
APALOStrong evidence

“THE MOBILE FIRST COMMUNICATION PLATFORM WITH FMC & WebRTC Apalo takes smarter communications to the next level, combining a comprehensive set of collaboration tools and rich…”

Source: company website · checked Sep 2, 2026
London, United Kingdom1-1071
20
ZIAASIndirect evidence

“At ZiAAS, we're passionate about harnessing the power of technology to transform businesses and streamline operations.”

Source: company website · checked Sep 2, 2026
London, United Kingdom11-5062
21
Voispeed LimitedIndirect evidence

“At VOIspeed Ltd we offer VOIspeed phone system technology, a robust simple yet feature-rich cloud based phone system for SMEs with video, desktop sharing and chat functions, ideal…”

Source: company website · checked Sep 2, 2026
St. Albans, United Kingdom11-5062
22
Voice SimplifiedIndirect evidence

“At Voice Simplified we believe that all businesses, large and small, should be able to communicate without the need for prohibitive and expensive licensing or infrastructure.”

Source: company website · checked Sep 2, 2026
Westbury, United Kingdom11-5055
23
PBX HostingIndirect evidence

“At PBX Hosting, we’re proud to be a Titanium 3CX partner – one of only a handful in the UK.”

Source: company website · checked Sep 2, 2026
Coventry, United Kingdom11-5052
24
Designed To TalkIndirect evidence

“Designed to Talk (DTT) has re-designed the way business technology is delivered managed and used.”

Source: company website · checked Sep 2, 2026
Datchet, United Kingdom51-20051
25
Imail CommsPartial evidence

“Our Communications Tools provide your business with a range of cloud, API and desktop-based services that will improve your communication channel strategies.”

Source: company website · checked Sep 2, 2026
Coventry, United Kingdom11-5051

Showing 25 of 80 enterprise communication platform providers based in the United Kingdom

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

As of Sep 2, 2026
11-50Median size (employees)
LondonLargest hub · 33 HQs
311Contacts with mobile numbers
Sep 2, 2026Data refreshed

Companies by employee count

1-10
31
11-50
31
51-200
10
201-500
3
501-1,000
3
10001+
1

Enterprise communication platform providers by metro

MetroCompanies
Enterprise communication platform providers in London33
Enterprise communication platform providers in Reading3
Enterprise communication platform providers in Liverpool2
Enterprise communication platform providers in St. Albans2
Enterprise communication platform providers in Bristol2
Enterprise communication platform providers in Birmingham2
Enterprise communication platform providers in Doncaster2

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 platform providers, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
What qualifies
Companies headquartered in the United Kingdom whose own description of what they do matches “enterprise communication platform providers”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among enterprise communication platform 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 an evidence rating so you can judge each match yourself.
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, 761 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 2, 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

How many enterprise communication platform providers are there based in the United Kingdom?

There are 80 enterprise communication platform providers headquartered in the United Kingdom as of September 2026 (RevenueBase).

What is the largest company on this list?

Alianza, headquartered in Enfield, tops this list with the largest team on record.

Which city has the most enterprise communication platform providers?

London leads with 33 headquartered companies, followed by Reading (3) and Liverpool (2).

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 761 verified decision-maker contacts tracked across these 80 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 2, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.