Company lists · Data refreshed September 2026
Top 25 Voice AI companies for contact centers based in the United Kingdom
RevenueBase identified 214 voice AI companies for contact centers headquartered in the United Kingdom as of September 2026 and tracks 4,913 professional contacts across them, including 1,190 with verified work emails. London is the largest hub.
This list covers voice AI companies for contact centers headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 voice AI companies for contact centers based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,991 contacts → | ||||
Indirect evidence “We believe customers and employees should be looked after, and every interaction is an opportunity for a conversation and to learn more about them.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 530 contacts → | ||||
Partial evidence “Moneypenny is the leading customer conversations partner to businesses across the UK and US, blending exceptional people with proprietary AI technology to deliver trusted caller…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 490 contacts → | ||||
Partial evidence “Give your customers a voice with ResQ.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 127 contacts → | ||||
Strong evidence “Natterbox is an AI-powered contact center solution that's natively integrated to Salesforce.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 90 contacts → | ||||
Indirect evidence “Vicorp makes it easy for organisations to cost-effectively deliver superior self-service experiences over the phone.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 52 contacts → | ||||
Partial evidence “Creative Virtual is a conversational AI leader recognised in the industry for our nearly two decades of experience and unmatched expertise.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 49 contacts → | ||||
Indirect evidence “TeleWare design software to help businesses communicate better with their customers and employees by routing communications more effectively.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 48 contacts → | ||||
Strong evidence “Core Cognitics is one of the pioneers in AI-native Business Communications (CX) solutions with AI Voice Agents and a trailblazing AI Operating System for blended Human-AI teams.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 46 contacts → | ||||
Indirect evidence “Founded in 2018 by a team with international experience, develops conversational automation solutions that manage for some of the ’.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 43 contacts → | ||||
Indirect evidence “We know how it goes.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 42 contacts → | ||||
Strong evidence “Sytel Limited develops and supplies Softdial Contact Center (SCC) multimedia, multichannel, fully blended cloud contact center solutions, for quick and easy deployment by partners…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 36 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 35 contacts → | ||||
Partial evidence “The iovox AI platform unlocks the potential of every customer conversation, from calls and texts to chats.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 32 contacts → | ||||
Partial evidence “At Veyn.ai, we are at the forefront of innovation, transforming the way businesses connect with their customers through advanced Conversational AI and Generative AI technologies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 30 contacts → | ||||
Indirect evidence “At Syndeo, our name means “to connect”, and that’s exactly what we help brands do: connect with customers through smarter, more human conversations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 30 contacts → | ||||
Indirect evidence “Over the 14 years of experience, Nanosemantics Lab has accumulated multiple technologies for human-machine communication, in addition to the vast knowledge database of dialogs in…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 28 contacts → | ||||
Partial evidence “Ctalk develops contact centre software.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 24 contacts → | ||||
Indirect evidence “Empower agents and amazing things happen.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 22 contacts → | ||||
Strong evidence “ContactEngine is an award-winning proactive conversational AI technology used by large corporations across industries to automate customer communications.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 22 contacts → | ||||
Partial evidence “ConnectiveOne is an omnichannel AI communication platform designed to help companies deliver top-tier customer service.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 20 contacts → | ||||
Indirect evidence “CLEVVA specializes in Virtual Agents.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 20 contacts → | ||||
Partial evidence “From pioneering AI and NLP in Latin America to achieving US$3M in sales, Alana has shaped the way brands and customers connect.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 17 contacts → | ||||
Indirect evidence “We exist to stand with leaders who carry the weight of large-scale customer operations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 16 contacts → | ||||
Partial evidence “Contact 07541005959 for any enquiries” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 15 contacts → | ||||
Indirect evidence “Communications Reimagined.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: voice AI companies for contact centers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names voice AI companies for contact centers.
- Partial evidence
- Its own public description names part of voice AI companies for contact centers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name voice AI companies for contact centers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 214 voice AI companies for contact centers based in the United Kingdom
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Voice AI companies for contact centers based in the United Kingdom at a glance
As of Sep 29, 2026Companies by employee count
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 214 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among voice AI companies for contact centers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “voice AI companies for contact centers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names voice AI companies for contact centers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among voice AI companies for contact centers, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 1,190 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Voice AI companies for contact centers by metro
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names voice AI companies for contact centers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many voice AI companies for contact centers are there based in the United Kingdom?
RevenueBase identified 214 voice AI companies for contact centers headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Quantanite, headquartered in London, tops this list with the largest team on record.
Which city has the most voice AI companies for contact centers?
London leads with 102 headquartered companies, followed by Manchester (7) and Edinburgh (6).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,190 verified decision-maker contacts tracked across these 214 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
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Voice AI companies for contact centers by geography
- Voice AI companies for contact centers based in Sydney, Australia
- Voice AI companies for contact centers based in Sao Paulo, Brazil
- Voice AI companies for contact centers based in Paris, France
- Voice AI companies for contact centers based in Berlin, Germany
- Voice AI companies for contact centers based in Bangalore, India
- Voice AI companies for contact centers based in Hyderabad, India
- Voice AI companies for contact centers based in Noida, India
- Voice AI companies for contact centers based in Madrid, Spain
- Voice AI companies for contact centers based in London, United Kingdom
- Voice AI companies for contact centers based in New York, United States
- Voice AI companies for contact centers based in San Francisco, United States
- Voice AI companies for contact centers based in Argentina
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 Smart Search, 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.
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