Company lists · Data refreshed August 2026
Top 25 Cloud phone system companies based in the United Kingdom
RevenueBase identified 181 company matches for cloud phone system companies associated with the United Kingdom as of August 2026 and tracks 1,744 professional contacts across them, including 610 with verified work emails and 188 with mobile numbers. London is the largest hub.
This list covers company matches for cloud phone system companies 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 August 31, 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.
The 25 largest cloud phone system companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 226 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 2 | 172 contacts → | ||||
Exact match “bOnline is UK’s leading provider of VoIP services for micro and small businesses.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 3 | 85 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 4 | 84 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 5 | 67 contacts → | ||||
Exact match “Telappliant is an award-winning VoIP and cloud communications provider.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 6 | 61 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 7 | 60 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 8 | 55 contacts → | ||||
Exact match “We have over 20 years' experience of working to deliver best of breed cloud telephony solutions to B2B clients.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 9 | 44 contacts → | ||||
Exact match “Microtalk: Global Communications Made Simple For over 15 years, Microtalk has delivered reliable voice, messaging, and cloud communications to businesses worldwide.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 10 | 35 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 11 | 32 contacts → | ||||
Exact match “At Lister Unified Communications we understand that everyone’s business telephone requirements are different.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 12 | 24 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 13 | 21 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 14 | 17 contacts → | ||||
Exact match “VoIPstudio is a complete business phone system and scalable call center with small business pricing.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 15 | 15 contacts → | ||||
Exact match “VTSL Ltd is a leading cloud communications company in the UK & Ireland.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 16 | 15 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 17 | 13 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 18 | 12 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 19 | 12 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 20 | 12 contacts → | ||||
Exact match “Winning and keeping customers is a challenge for every business.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 21 | 11 contacts → | ||||
Exact match “At Blue Portal, we take the hassle out of business telecoms by offering everything you need under one roof.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 22 | 10 contacts → | ||||
Exact match “Boom brings together the best of unified communications, software as a service and deep analytics to power businesses of all sizes” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 23 | 10 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 24 | 10 contacts → | ||||
Exact match “Nexus IP have been providing business telephony nationwide for over 30 years.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 25 | 10 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “cloud phone system companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 181 cloud phone system companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 610 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Cloud phone system companies based in the United Kingdom at a glance
As of Aug 31, 2026Companies by employee count
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 phone system companies” 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 610 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 August 31, 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 phone system companies 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 phone system companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many cloud phone system companies are there based in the United Kingdom?
RevenueBase identified 181 company matches for cloud phone system companies associated with the United Kingdom as of August 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?
Calltower tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most cloud phone system companies?
London leads with 39 company records, followed by Manchester (6) and Leicester (4).
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 610 professional contacts with verified work emails tracked across these 181 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 August 31, 2026.
Ready to reach these companies? Verified emails and direct dials for all 181 cloud phone system companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Cloud phone system companies by geography
- Cloud phone system companies based in the United States
- Cloud phone system companies based in Canada
- Cloud phone system companies based in Brazil
- Cloud phone system companies based in Australia
- Cloud phone system companies based in the Netherlands
- Cloud phone system companies based in Germany
- Cloud phone system companies based in Spain
- Cloud phone system companies based in South Africa
- Cloud phone system companies based in London, United Kingdom
- Cloud phone system companies based in India
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Cloud phone system companies based in the United States
- Cloud phone system companies based in Canada
- Cloud phone system companies based in Brazil
- Cloud phone system companies based in Australia
- Cloud phone system companies based in the Netherlands
- Cloud phone system companies based in Germany
Company intelligence · public preview
Top 25 cloud phone system companies based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 181 matching company records for cloud phone system companies based in the United Kingdom, with 1,744 tracked contacts and 610 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: August 31, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 cloud phone system companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Calltowercalltower.comHQ: HQ not recorded; location: London, United KingdomReported employees: 201-500 | HQ not recorded; location: London, United Kingdom | 201-500 | Exact match | 226 contacts → |
“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.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Bonlinebonline.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 172 contacts → |
“bOnline is UK’s leading provider of VoIP services for micro and small businesses.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Gradwellgradwell.comHQ: HQ not recorded; location: West Bath, United KingdomReported employees: 51-200 | HQ not recorded; location: West Bath, United Kingdom | 51-200 | Exact match | 85 contacts → |
“Gradwell Communications Ltd are a leading cloud communications solutions provider with a focus on small to medium-sized businesses (SMEs).” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Sipcomsipcom.comHQ: HQ not recorded; location: London, United KingdomReported employees: 501-1,000 | HQ not recorded; location: London, United Kingdom | 501-1,000 | Exact match | 84 contacts → |
“Sipcom exists to make you the hero of your business narrative by turning complexity into clarity.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Telapplianttelappliant.comHQ: HQ not recorded; location: Manchester, United KingdomReported employees: 51-200 | HQ not recorded; location: Manchester, United Kingdom | 51-200 | Exact match | 67 contacts → |
“Telappliant is an award-winning VoIP and cloud communications provider.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Enconvo UKenconvo.co.ukHQ: HQ not recorded; location: Telford, United KingdomReported employees: 51-200 | HQ not recorded; location: Telford, United Kingdom | 51-200 | Exact match | 61 contacts → |
“We’re a leading unified communications provider supplying over 2 million users with the technology they need to work their magic.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Nebulanebulacloud.comHQ: HQ not recorded; location: Guildford, United KingdomReported employees: 51-200 | HQ not recorded; location: Guildford, United Kingdom | 51-200 | Exact match | 60 contacts → |
“Nebula is a leading SaaS provider of workplace communications software, delivering powerful, secure, and adaptable solutions and applications for voice, messaging, customer…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Firstcom Europe LTDfirstcomeurope.co.ukHQ: HQ not recorded; location: Bolton, United KingdomReported employees: 51-200 | HQ not recorded; location: Bolton, United Kingdom | 51-200 | Exact match | 55 contacts → |
“We have over 20 years' experience of working to deliver best of breed cloud telephony solutions to B2B clients.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Microtalkmicrotalk.co.ukHQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 44 contacts → |
“Microtalk: Global Communications Made Simple For over 15 years, Microtalk has delivered reliable voice, messaging, and cloud communications to businesses worldwide.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  SVLsvl.co.ukHQ: HQ not recorded; location: East Kilbride, United KingdomReported employees: 11-50 | HQ not recorded; location: East Kilbride, United Kingdom | 11-50 | Exact match | 35 contacts → |
“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 description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Lister Unified Communicationslister-communications.co.ukHQ: HQ not recorded; location: Stonehouse, United KingdomReported employees: 11-50 | HQ not recorded; location: Stonehouse, United Kingdom | 11-50 | Exact match | 32 contacts → |
“At Lister Unified Communications we understand that everyone’s business telephone requirements are different.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Mainstream Digitalmsdigital.comHQ: HQ not recorded; location: Cirencester, United KingdomReported employees: 11-50 | HQ not recorded; location: Cirencester, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Mainstream Digital – Communications Solutions for Business Mainstream Digital is a Business Communications solutions provider with over 20 years of telecommunications experience.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Wavetel Business LTDwavetelbusiness.co.ukHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 21 contacts → |
“Wavetel is one of the top VoIP Phone System and Telecom Services Providers in the UK.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Voipstudiovoipstudio.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 17 contacts → |
“VoIPstudio is a complete business phone system and scalable call center with small business pricing.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  VTSLvtsl.netHQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 15 contacts → |
“VTSL Ltd is a leading cloud communications company in the UK & Ireland.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Elementel LTDelementel.co.ukHQ: HQ not recorded; location: Romsey, United KingdomReported employees: 11-50 | HQ not recorded; location: Romsey, United Kingdom | 11-50 | Exact match | 15 contacts → |
“ElemenTel are a leading provider of next generation voice over internet (VoIP) telephony solutions to businesses of all types and sizes.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Splicecom LTDsplicecom.comHQ: HQ not recorded; location: Chorleywood, United KingdomReported employees: 51-200 | HQ not recorded; location: Chorleywood, United Kingdom | 51-200 | Exact match | 13 contacts → |
“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 description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Connect Commsconnectcomms.co.ukHQ: HQ not recorded; location: Manchester, United KingdomReported employees: 11-50 | HQ not recorded; location: Manchester, United Kingdom | 11-50 | Exact match | 12 contacts → |
“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 description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  The Voip Shopthevoipshop.co.ukHQ: HQ not recorded; location: Leicester, United KingdomReported employees: 11-50 | HQ not recorded; location: Leicester, United Kingdom | 11-50 | Exact match | 12 contacts → |
“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 description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Ihub UKihub.co.uk HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Winning and keeping customers is a challenge for every business.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Blue Portal Groupblueportal.co.ukHQ: HQ not recorded; location: Barnsley, United KingdomReported employees: 11-50 | HQ not recorded; location: Barnsley, United Kingdom | 11-50 | Exact match | 11 contacts → |
“At Blue Portal, we take the hassle out of business telecoms by offering everything you need under one roof.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Boom Coms Limitedboom.limitedHQ: HQ not recorded; location: Basingstoke, United KingdomReported employees: 11-50 | HQ not recorded; location: Basingstoke, United Kingdom | 11-50 | Exact match | 10 contacts → |
“Boom brings together the best of unified communications, software as a service and deep analytics to power businesses of all sizes” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: HQ not recorded; location: Telford, United KingdomReported employees: 11-50 | HQ not recorded; location: Telford, United Kingdom | 11-50 | Exact match | 10 contacts → |
“in2tel provides reliable and feature-rich business VoIP through phone lines, phone systems, and contact centre solutions.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Nexus IPnexusip.comHQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 10 contacts → |
“Nexus IP have been providing business telephony nationwide for over 30 years.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  The Real PBXtherealpbx.comHQ: HQ not recorded; location: Snodland, United KingdomReported employees: 11-50 | HQ not recorded; location: Snodland, United Kingdom | 11-50 | Exact match | 10 contacts → |
“The Real PBX is a leading provider of unified cloud communication services to consumers and businesses.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 181 company matches
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Cloud phone system companies: dataset insights
August 31, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
173 records in the displayed employee bands.
8 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: August 31, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Cloud phone system companies by metro
Questions about this company list
What does Exact match mean for cloud phone system companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many cloud phone system companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 181 matching company records, 1,744 tracked contacts and 610 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: August 31, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cloud phone system companies by geography
- Cloud phone system companies based in the United States
- Cloud phone system companies based in Canada
- Cloud phone system companies based in Brazil
- Cloud phone system companies based in Australia
- Cloud phone system companies based in the Netherlands
- Cloud phone system companies based in Germany
- Cloud phone system companies based in Spain
- Cloud phone system companies based in South Africa
- Cloud phone system companies based in London, United Kingdom
- Cloud phone system companies based in India
Cite this list
RevenueBase Data Team. Top 25 cloud phone system companies based in the United Kingdom. Snapshot: August 31, 2026. https://revenuebase.ai/companies/cloud-phone-system-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Cloud phone system companies based in the United States
- Cloud phone system companies based in Canada
- Cloud phone system companies based in Brazil
- Cloud phone system companies based in Australia
- Cloud phone system companies based in the Netherlands
- Cloud phone system companies based in Germany
Company intelligence · public preview
Top 25 cloud phone system companies based in the United Kingdom
RevenueBase records 181 matching company records for cloud phone system companies based in the United Kingdom, with 1,744 tracked contacts and 610 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: August 31, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 cloud phone system companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Calltowercalltower.com HQ: HQ not recorded; location: London, United KingdomReported employees: 201-500 | HQ not recorded; location: London, United Kingdom | 201-500 | Exact match | 226 contacts → |
“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.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Bonlinebonline.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 172 contacts → |
“bOnline is UK’s leading provider of VoIP services for micro and small businesses.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Gradwellgradwell.com HQ: HQ not recorded; location: West Bath, United KingdomReported employees: 51-200 | HQ not recorded; location: West Bath, United Kingdom | 51-200 | Exact match | 85 contacts → |
“Gradwell Communications Ltd are a leading cloud communications solutions provider with a focus on small to medium-sized businesses (SMEs).” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Sipcomsipcom.com HQ: HQ not recorded; location: London, United KingdomReported employees: 501-1,000 | HQ not recorded; location: London, United Kingdom | 501-1,000 | Exact match | 84 contacts → |
“Sipcom exists to make you the hero of your business narrative by turning complexity into clarity.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Telapplianttelappliant.com HQ: HQ not recorded; location: Manchester, United KingdomReported employees: 51-200 | HQ not recorded; location: Manchester, United Kingdom | 51-200 | Exact match | 67 contacts → |
“Telappliant is an award-winning VoIP and cloud communications provider.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Enconvo UKenconvo.co.uk HQ: HQ not recorded; location: Telford, United KingdomReported employees: 51-200 | HQ not recorded; location: Telford, United Kingdom | 51-200 | Exact match | 61 contacts → |
“We’re a leading unified communications provider supplying over 2 million users with the technology they need to work their magic.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Nebulanebulacloud.com HQ: HQ not recorded; location: Guildford, United KingdomReported employees: 51-200 | HQ not recorded; location: Guildford, United Kingdom | 51-200 | Exact match | 60 contacts → |
“Nebula is a leading SaaS provider of workplace communications software, delivering powerful, secure, and adaptable solutions and applications for voice, messaging, customer…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Firstcom Europe LTDfirstcomeurope.co.uk HQ: HQ not recorded; location: Bolton, United KingdomReported employees: 51-200 | HQ not recorded; location: Bolton, United Kingdom | 51-200 | Exact match | 55 contacts → |
“We have over 20 years' experience of working to deliver best of breed cloud telephony solutions to B2B clients.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Microtalkmicrotalk.co.uk HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 44 contacts → |
“Microtalk: Global Communications Made Simple For over 15 years, Microtalk has delivered reliable voice, messaging, and cloud communications to businesses worldwide.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | SVLsvl.co.uk HQ: HQ not recorded; location: East Kilbride, United KingdomReported employees: 11-50 | HQ not recorded; location: East Kilbride, United Kingdom | 11-50 | Exact match | 35 contacts → |
“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 description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Lister Unified Communicationslister-communications.co.uk HQ: HQ not recorded; location: Stonehouse, United KingdomReported employees: 11-50 | HQ not recorded; location: Stonehouse, United Kingdom | 11-50 | Exact match | 32 contacts → |
“At Lister Unified Communications we understand that everyone’s business telephone requirements are different.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Mainstream Digitalmsdigital.com HQ: HQ not recorded; location: Cirencester, United KingdomReported employees: 11-50 | HQ not recorded; location: Cirencester, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Mainstream Digital – Communications Solutions for Business Mainstream Digital is a Business Communications solutions provider with over 20 years of telecommunications experience.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Wavetel Business LTDwavetelbusiness.co.uk HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 21 contacts → |
“Wavetel is one of the top VoIP Phone System and Telecom Services Providers in the UK.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Voipstudiovoipstudio.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 17 contacts → |
“VoIPstudio is a complete business phone system and scalable call center with small business pricing.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | VTSLvtsl.net HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 15 contacts → |
“VTSL Ltd is a leading cloud communications company in the UK & Ireland.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Elementel LTDelementel.co.uk HQ: HQ not recorded; location: Romsey, United KingdomReported employees: 11-50 | HQ not recorded; location: Romsey, United Kingdom | 11-50 | Exact match | 15 contacts → |
“ElemenTel are a leading provider of next generation voice over internet (VoIP) telephony solutions to businesses of all types and sizes.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Splicecom LTDsplicecom.com HQ: HQ not recorded; location: Chorleywood, United KingdomReported employees: 51-200 | HQ not recorded; location: Chorleywood, United Kingdom | 51-200 | Exact match | 13 contacts → |
“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 description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Connect Commsconnectcomms.co.uk HQ: HQ not recorded; location: Manchester, United KingdomReported employees: 11-50 | HQ not recorded; location: Manchester, United Kingdom | 11-50 | Exact match | 12 contacts → |
“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 description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | The Voip Shopthevoipshop.co.uk HQ: HQ not recorded; location: Leicester, United KingdomReported employees: 11-50 | HQ not recorded; location: Leicester, United Kingdom | 11-50 | Exact match | 12 contacts → |
“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 description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Ihub UKihub.co.uk HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Winning and keeping customers is a challenge for every business.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Blue Portal Groupblueportal.co.uk HQ: HQ not recorded; location: Barnsley, United KingdomReported employees: 11-50 | HQ not recorded; location: Barnsley, United Kingdom | 11-50 | Exact match | 11 contacts → |
“At Blue Portal, we take the hassle out of business telecoms by offering everything you need under one roof.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Boom Coms Limitedboom.limited HQ: HQ not recorded; location: Basingstoke, United KingdomReported employees: 11-50 | HQ not recorded; location: Basingstoke, United Kingdom | 11-50 | Exact match | 10 contacts → |
“Boom brings together the best of unified communications, software as a service and deep analytics to power businesses of all sizes” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: HQ not recorded; location: Telford, United KingdomReported employees: 11-50 | HQ not recorded; location: Telford, United Kingdom | 11-50 | Exact match | 10 contacts → |
“in2tel provides reliable and feature-rich business VoIP through phone lines, phone systems, and contact centre solutions.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Nexus IPnexusip.com HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 10 contacts → |
“Nexus IP have been providing business telephony nationwide for over 30 years.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | The Real PBXtherealpbx.com HQ: HQ not recorded; location: Snodland, United KingdomReported employees: 11-50 | HQ not recorded; location: Snodland, United Kingdom | 11-50 | Exact match | 10 contacts → |
“The Real PBX is a leading provider of unified cloud communication services to consumers and businesses.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 181 company matches
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Cloud phone system companies: dataset insights
August 31, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
173 records in the displayed employee bands.
8 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: August 31, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Cloud phone system companies by metro
Questions about this company list
What does Exact match mean for cloud phone system companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many cloud phone system companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 181 matching company records, 1,744 tracked contacts and 610 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: August 31, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cloud phone system companies by geography
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- Cloud phone system companies based in the Netherlands
- Cloud phone system companies based in Germany
- Cloud phone system companies based in Spain
- Cloud phone system companies based in South Africa
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Cite this list
RevenueBase Data Team. Top 25 cloud phone system companies based in the United Kingdom. Snapshot: August 31, 2026. https://revenuebase.ai/companies/cloud-phone-system-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Cloud phone system companies based in the United States
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- Cloud phone system companies based in the Netherlands
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