Company lists · Data refreshed November 2026

Top 24 Cloud communications integrators based in the United Kingdom

RevenueBase identified 328 company matches for cloud communications integrators associated with the United Kingdom as of November 2026 and tracks 6,064 professional contacts across them, including 2,046 with verified work emails. London is the largest hub.

This list covers company matches for cloud communications integrators 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 5, 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 5, 2026 How this list was built
328Companies
6,064Contacts tracked
2,046Verified emails
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The 24 largest cloud communications integrators based in the United Kingdom

Ranked by team size
Top 24 of 328 company matches for cloud communications integrators based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchFareham, United KingdomHQ recorded Nov 5, 2026501-1,000715 contacts →

Exact match

“Onecom is the UK’s leading business telecoms and cloud communications provider managing over a million services for business customers - delivering communication services and…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Nov 5, 20261,001-5,000423 contacts →

Exact match

“We've moved!”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchChorley, United KingdomHQ recorded Nov 5, 202651-200154 contacts →

Exact match

“Great technology matters, but it’s great people who make it work.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 5, 202610001+109 contacts →

Exact match

“The Collaboration and CX solutions offered by NTT Ltd.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Nov 5, 2026201-500105 contacts →

Exact match

“Adapt is a leading UK managed cloud services provider and integrator, enabling customers’ digital evolution.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 5, 202651-20099 contacts →

Exact match

“tyntec is a cloud communications provider enabling businesses to communicate easier with their customers, workforce and machines.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 5, 202651-20070 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchGuildford, United KingdomHQ recorded Nov 5, 202651-20069 contacts →

Exact match

“A leading Systems Integrator and Technology Innovator trusted by world class brands for over 40 years, Britannic designs, develops and delivers business communications, sovereign…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchBath, United KingdomHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
11Exact matchBolton, United KingdomHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
12Exact matchGuildford, United KingdomHQ recorded Nov 5, 202651-20064 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchSunderland, United KingdomHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
14Exact matchTula, United KingdomHQ recorded Nov 5, 202651-20051 contacts →

Exact match

“ITooLabs is global software vendor with own product ITooLabs Communications Server.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchTunbridge Wells, United KingdomHQ recorded Nov 5, 2026201-50050 contacts →

Exact match

“AdEPT Technology Group plc is listed on the London Stock Exchange.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5049 contacts →

Exact match

“Voiceflex is an innovative and multi-award-winning wholesale communications provider and leading telecoms carrier of SIP, Hosted Telephony, Connectivity, Unified Communications…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchAylesbury, United KingdomHQ recorded Nov 5, 202611-5045 contacts →

Exact match

“Sytel Limited develops and supplies Softdial Contact Center (SCC) multimedia, multichannel, fully blended cloud contact center solutions, for quick and easy deployment by partners…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchSolihull, United KingdomHQ recorded Nov 5, 202651-20044 contacts →

Exact match

“Amillan is a communications integrator that delivers solutions to make your organisation perform better.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
20Exact matchReigate, United KingdomHQ recorded Nov 5, 2026501-1,00044 contacts →

Exact match

“Updata Infrastructure part of Capita plc, is a pioneering connectivity services integrator.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchEast Kilbride, United KingdomHQ recorded Nov 5, 202611-5043 contacts →

Exact match

“As the UK and Ireland’s longest serving trusted advisor to the Contact Centre industry, SVL has grown to become a leading provider of unified cloud communications and telephony…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchFirst Avenue, United KingdomHQ recorded Nov 5, 202611-5042 contacts →

Exact match

“Spectrum helps UK organisations stay connected with reliable business mobile, connectivity, cloud communications and customer experience solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchManchester, United KingdomHQ recorded Nov 5, 2026201-50042 contacts →

Exact match

“Calyx is the partner of choice for organisations seeking to understand, adopt and exploit technology to gain a compelling competitive advantage.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchSlough, United KingdomHQ recorded Nov 5, 202651-20040 contacts →

Exact match

“We are a leading worldwide provider of cloud-based and customer hosted managed visual communication and collaboration services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 24 of 328 cloud communications integrators based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 2,046 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cloud communications integrators based in the United Kingdom at a glance

As of Nov 5, 2026
33.7%Verified-email coverage
18.5Average contacts per company
11-50Median size (employees)
26.8%Largest-city concentration · London
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
142
11-50
118
51-200
36
201-500
13
501-1,000
8
1,001-5,000
1
10001+
2

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 328 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 “cloud communications integrators” 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 2,046 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 5, 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.

Cloud communications integrators 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 “cloud communications integrators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cloud communications integrators are there based in the United Kingdom?

RevenueBase identified 328 company matches for cloud communications integrators 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?

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

Which city has the most cloud communications integrators?

London leads with 88 company records, followed by Manchester (9) and Leeds (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 2,046 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 November 5, 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.