Company lists · Data refreshed November 2026

Top 25 Voice over internet protocol (voip) services based in the United Kingdom

RevenueBase identified 322 company matches for voice over internet protocol (voip) services associated with the United Kingdom as of November 2026 and tracks 2,531 professional contacts across them, including 739 with verified work emails. London is the largest hub.

This list covers company matches for voice over internet protocol (voip) services 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 3, 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 3, 2026 How this list was built
322Companies
2,531Contacts tracked
739Verified emails
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The 25 largest voice over internet protocol (voip) services based in the United Kingdom

Ranked by team size
Top 25 of 322 company matches for voice over internet protocol (voip) services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 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 KingdomHQ recorded Nov 3, 202651-200162 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Nov 3, 2026501-1,00083 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 · Nov 3, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Nov 3, 202651-20070 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
4Exact matchTelford, United KingdomHQ recorded Nov 3, 202651-20070 contacts →

Exact match

“We’re a leading unified communications provider supplying over 2 million users with the technology they need to work their magic.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
5Exact matchBath, United KingdomHQ recorded Nov 3, 202651-20067 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 · Nov 3, 2026 · View company records in RevenueBase
6Exact matchBolton, United KingdomHQ recorded Nov 3, 202651-20066 contacts →

Exact match

“Born in Bolton and connected across Europe, Firstcom Europe delivers technology without intimidation, helping businesses communicate, connect, protect and grow through telephony…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
7Exact matchSunderland, United KingdomHQ recorded Nov 3, 2026n/a61 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-5044 contacts →

Exact match

“Microtalk: Wholesale SMS & Carrier-Grade Connectivity Simplified For over 15 years, Microtalk has empowered businesses globally with reliable voice, messaging, and cloud…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
9Exact matchStonehouse, United KingdomHQ recorded Nov 3, 202611-5039 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-5033 contacts →

Exact match

“Xinix is UK’s leading cloud-based unified communication provider making persistent efforts towards modernizing business communications.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
11Exact matchHarrow, United KingdomHQ recorded Nov 3, 202611-5032 contacts →

Exact match

“With a legacy rooted in two decades of telecom consulting and services expertise, PineVox emerges as a visionary leader in the industry.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-5032 contacts →

Exact match

“Emerald Cloud Phone System, offers both high-quality traditional telephone lines and cloud phone system packages.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
13Exact matchHertfordshire, United KingdomHQ recorded Nov 3, 202611-5031 contacts →

Exact match

“Comms Connect is an award-winning UK provider of business communications, connectivity and energy solutions, helping organisations stay connected, productive and competitive.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
14Exact matchBasildon, United KingdomHQ recorded Nov 3, 202651-20027 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 · Nov 3, 2026 · View company records in RevenueBase
15Exact matchHam Green, United KingdomHQ recorded Nov 3, 20261-1025 contacts →

Exact match

“Alliance Communications provides businesses with clear impartial advice on a range of communications needs.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
16Exact matchTheale, United KingdomHQ recorded Nov 3, 202611-5024 contacts →

Exact match

“Magrathea have been wholesale VoIP experts for over 25 years.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
17Exact matchCirencester, United KingdomHQ recorded Nov 3, 202611-5023 contacts →

Exact match

“Mainstream Digital – Communications Solutions for Business Mainstream Digital is a Business Communications solutions provider with over 20 years of telecommunications experience.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
18Exact matchCheshire, United KingdomHQ recorded Nov 3, 202611-5021 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 · Nov 3, 2026 · View company records in RevenueBase
19Exact matchColeshill, United KingdomHQ recorded Nov 3, 202611-5021 contacts →

Exact match

“Since 2006, Birmingham Telecom has been helping businesses across the UK with reliable business telecoms, Managed IT Support, Cyber Security and Connectivity Solutions.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
20Exact matchRutherglen, United KingdomHQ recorded Nov 3, 202611-5020 contacts →

Exact match

“Telecom Networks is a trusted UK provider of business communication, connectivity, security, and technology solutions.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
21Exact matchMilton Keynes, United KingdomHQ recorded Nov 3, 202611-5018 contacts →

Exact match

“9Eons provides a comprehensive suite of voice and data services to a wide variety of customers: from Mobile operators to residential users.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-5018 contacts →

Exact match

“Voipfone is an Internet Telephone Service provided by iNet Telecoms Ltd.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
23Exact matchLeicester, United KingdomHQ recorded Nov 3, 202611-5016 contacts →

Exact match

“CLOUD TELEPHONE SYSTEM The VoIP Shop is a leading provider of business VoIP phone systems, offering reliable and affordable solutions for small and medium-sized enterprises.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Nov 3, 202651-20016 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
25Exact matchRomsey, United KingdomHQ recorded Nov 3, 202611-5015 contacts →

Exact match

“ElemenTel are a leading provider of next generation voice over internet (VoIP) telephony solutions to businesses of all types and sizes.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase

Showing 25 of 322 voice over internet protocol (voip) services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 739 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Voice over internet protocol (voip) services based in the United Kingdom at a glance

As of Nov 3, 2026
29.2%Verified-email coverage
7.9Average contacts per company
1-10Median size (employees)
24.5%Largest-city concentration · London
Nov 3, 2026Page data refreshed

Companies by employee count

1-10
155
11-50
123
51-200
20
201-500
4
501-1,000
4
10001+
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 322 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 “voice over internet protocol (voip) services” 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 739 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 3, 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.

Voice over internet protocol (voip) services 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 “voice over internet protocol (voip) services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many voice over internet protocol (voip) services are there based in the United Kingdom?

RevenueBase identified 322 company matches for voice over internet protocol (voip) services 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?

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

Which city has the most voice over internet protocol (voip) services?

London leads with 79 company records, followed by Birmingham (9) 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 739 professional contacts with verified work emails tracked across these 322 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 3, 2026.

Ready to reach these companies? Verified emails and direct dials for all 322 voice over internet protocol (voip) services based in the United Kingdom. Start with a free account, no credit card.

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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.