Company lists · Data refreshed September 2026

Top 25 Enterprise voip providers based in the United Kingdom

RevenueBase identified 328 company matches for enterprise voip providers associated with the United Kingdom as of September 2026 and tracks 2,939 professional contacts across them, including 635 with verified work emails and 133 with mobile numbers. London is the largest hub.

This list covers company matches for enterprise voip providers 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 September 2, 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 Sep 2, 2026 How this list was built
328Companies
2,939Contacts tracked
635Verified emails
133Mobile numbers
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The 25 largest enterprise voip providers based in the United Kingdom

Ranked by team size
Top 25 of 328 company matches for enterprise voip providers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 2, 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 matchLondon, United Kingdom51-200172 contacts →

Exact match

“bOnline is UK’s leading provider of VoIP services for micro and small businesses.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
2Exact matchWest Bath, United Kingdom51-20085 contacts →

Exact match

“Gradwell Communications Ltd are a leading cloud communications solutions provider with a focus on small to medium-sized businesses (SMEs).”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
3Exact matchLondon, United Kingdom501-1,00084 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
4Exact matchManchester, United Kingdom51-20067 contacts →

Exact match

“Telappliant is an award-winning VoIP and cloud communications provider.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
5Exact matchGosport, United Kingdom51-20044 contacts →

Exact match

“We help UK companies cut costs, stay connected, and scale smarter - with VoIP, mobile and broadband solutions that actually work.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
6Exact matchStonehouse, United Kingdom11-5032 contacts →

Exact match

“At Lister Unified Communications we understand that everyone’s business telephone requirements are different.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
7Exact matchHaslemere, United Kingdom51-20029 contacts →

Exact match

“VoiceMailTel is a high tech innovator and service provider of a unified telecommunication solution which effectively integrates PSTN, VoIP, cellular, voicemail into an…”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
8Exact matchUnited Kingdom11-5029 contacts →

Exact match

“Comms Connect is an independent B2B telecommunications provider, specialising in providing business communication solutions.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
9Exact matchRomford, United Kingdom11-5025 contacts →

Exact match

“NTA Ltd are a UK based VoIP Carrier - Hosted Telephony in your name & branding, utilising our network infrastructure.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
10Exact matchLondon, United Kingdom51-20021 contacts →

Exact match

“Wavetel is one of the top VoIP Phone System and Telecom Services Providers in the UK.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
11Exact matchColeshill, United Kingdom11-5019 contacts →

Exact match

“We are an established telecom service provider taking SMEs to the Cloud using our 18 years of experience, superior customer support and competitive pricing.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
12Exact matchLondon, United Kingdom51-20017 contacts →

Exact match

“VoIPstudio is a complete business phone system and scalable call center with small business pricing.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
13Exact matchUnited Kingdom11-5015 contacts →

Exact match

“At GPS Telecom, we help UK businesses stay connected with reliable, straightforward telecoms solutions, from VoIP phone systems to business mobile plans and fast, secure internet…”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
14Exact matchDaresbury, United Kingdom11-5013 contacts →

Exact match

“We are a telecommunications company based in Daresbury, Cheshire, in northwest England.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
15Exact matchChorleywood, United Kingdom51-20013 contacts →

Exact match

“British based Splicecom is the Channel focussed Voice Solution provider offering enhanced voice services deployed in the cloud, on–premise or any blend of the two.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
16Exact matchManchester, United Kingdom11-5012 contacts →

Exact match

“At Connect Comms we are committed to supplying all our customers with a first-class service from start to finish for no extra expense.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
17Exact matchExeter, United Kingdom11-5012 contacts →

Exact match

“IP Office Ltd is a leading supplier of business communications and IT services.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
18Exact matchTelford, United Kingdom11-5010 contacts →

Exact match

“in2tel provides reliable and feature-rich business VoIP through phone lines, phone systems, and contact centre solutions.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
19Exact matchUnited Kingdom11-5010 contacts →

Exact match

“Y-our Network Group provides modern, reliable telecoms solutions designed specifically for small and medium-sized businesses across the UK.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
20Exact matchLondon, United Kingdom11-5010 contacts →

Exact match

“Nexus IP have been providing business telephony nationwide for over 30 years.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
21Exact matchSnodland, United Kingdom11-5010 contacts →

Exact match

“The Real PBX is a leading provider of unified cloud communication services to consumers and businesses.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
22Exact matchBurgess Hill, United Kingdom11-509 contacts →

Exact match

“If you feel that your business telephone system no longer meets the needs of your business then why not talk to us?”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
23Exact matchCroydon, United Kingdom51-2008 contacts →

Exact match

“VanillaIP is a leading UK provider of real-time, integrated communication solutions in the Cloud.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
24Exact matchBelfast, United Kingdom11-508 contacts →

Exact match

“Voxbit is reinventing the business phone by merging the worlds of cloud computing, web services & telecommunications to make collaborating part of the team.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
25Exact matchChelmsford, United Kingdom11-508 contacts →

Exact match

“VoIPon is a worldwide business to business distributor of the highest quality voice over IP hardware.”

Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase

Showing 25 of 328 enterprise voip providers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 635 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Enterprise voip providers based in the United Kingdom at a glance

As of Sep 2, 2026
21.6%Verified-email coverage
4.5%Mobile-number coverage
9.0Average contacts per company
1-10Median size (employees)
22.3%Largest-city concentration · London
Sep 2, 2026Page data refreshed

Companies by employee count

1-10
167
11-50
129
51-200
15
201-500
2
501-1,000
2
10001+
1

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 “enterprise voip providers” 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 635 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 September 2, 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.

Enterprise voip providers by metro

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 “enterprise voip providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 328 company matches for enterprise voip providers associated with the United Kingdom as of September 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?

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

Which city has the most enterprise voip providers?

London leads with 73 company records, followed by Birmingham (8) and Manchester (7).

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 635 professional contacts with verified work emails tracked across these 328 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 September 2, 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.