Company lists · Data refreshed September 2026

Top 25 Conversational AI companies for customer support based in London, United Kingdom

Name: Conversational AI companies for customer support based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 350 companies tracked

RevenueBase identified 350 conversational AI companies for customer support headquartered in London, United Kingdom as of September 2026 and tracks 4,397 professional contacts across them, including 863 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers conversational AI companies for customer support headquartered in London, 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 27, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

350Companies

4,397Contacts tracked

863Verified emails

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The 25 largest conversational AI companies for customer support based in London, United Kingdom

Ranked by team size

Top 25 of 350 conversational AI companies for customer support based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to conversational AI companies for customer support: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Quantanite	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	1,991 contacts →
	Strong 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 27, 2026
2	Streetbees	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	97 contacts →
	Strong evidence “Streetbees pioneered conversational research, leveraging AI to decode complex human behaviour over the last decade.” Source: RevenueBase Database · checked Sep 27, 2026
3	Sirius Support	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	85 contacts →
	Strong evidence “Humanizing AI-Powered Customer Support The future of customer support is intelligent, efficient-and unmistakably human.” Source: RevenueBase Database · checked Sep 27, 2026
4	Digitalgenius	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	70 contacts →
	Strong evidence “DigitalGenius allows online retailers and ecommerce brands to fully resolve customer service queries using the power of AI and automation.” Source: RevenueBase Database · checked Sep 27, 2026
5	Creative Virtual	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	52 contacts →
	Strong 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 27, 2026
6	Gravitas AI	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	50 contacts →
	Strong evidence “Gravitas AI is a niche artificial intelligence and blockchain company with a focus on empowering organisations to optimize productivity and enhance customer experience.” Source: RevenueBase Database · checked Sep 27, 2026
7	Socialbear	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	501-1,000	50 contacts →
	Strong evidence “Socialbear® is the global leader in AI + Human 🤖 Customer Support and Community Management - powering support for the world’s largest brands.” Source: RevenueBase Database · checked Sep 27, 2026
8	NEW Digital Intelligence	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	46 contacts →
	Partial evidence “At NDI, we enable artificial Intelligence in businesses for companies of all sizes through simple AI transformation and risk-free AI Automation.” Source: RevenueBase Database · checked Sep 27, 2026
9	Sovran AI	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	46 contacts →
	Partial 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 27, 2026
10	Gradient Labs	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	43 contacts →
	Strong evidence “Gradient Labs is the conversational AI platform transforming customer operations in financial services.” Source: RevenueBase Database · checked Sep 27, 2026
11	IOVOX	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	35 contacts →
	Strong evidence “The iovox AI platform unlocks the potential of every customer conversation, from calls and texts to chats.” Source: RevenueBase Database · checked Sep 27, 2026
12	Mindset AI	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	32 contacts →
	Partial evidence “Let anyone launch AI agents in days with natural language, without draining dev resources.” Source: RevenueBase Database · checked Sep 27, 2026
13	Veyn AI	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	32 contacts →
	Strong 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 27, 2026
14	Agile Loop	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	32 contacts →
	Indirect evidence “Imagine a future where using computers is as easy as talking to a friend.” Source: RevenueBase Database · checked Sep 27, 2026
15	Nanosemantics LAB	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	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 27, 2026
16	POPP	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	26 contacts →
	Indirect evidence “Popp helps forward-thinking staffing and recruitment firms automate candidate workflows, end-to-end.” Source: RevenueBase Database · checked Sep 27, 2026
17	Contactengine	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	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 27, 2026
18	Connectiveone	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	22 contacts →
	Strong evidence “ConnectiveOne is an omnichannel AI communication platform designed to help companies deliver top-tier customer service.” Source: RevenueBase Database · checked Sep 27, 2026
19	Clevva	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	20 contacts →
	Indirect evidence “CLEVVA specializes in Virtual Agents.” Source: RevenueBase Database · checked Sep 27, 2026
20	Alana AI	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	20 contacts →
	Strong 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 27, 2026
21	Captivate	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	18 contacts →
	Partial evidence “The channel runs on conversations, and loses most of them.” Source: RevenueBase Database · checked Sep 27, 2026
22	Bluetweak	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	16 contacts →
	Strong evidence “BlueTweak is an AI-powered omnichannel customer support platform that brings every conversation-voice, email, chat, and social-into one interaction timeline.” Source: RevenueBase Database · checked Sep 27, 2026
23	Athena AI	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	1-10	16 contacts →
	Strong evidence “Athena AI is a no-code conversational platform that helps businesses unify customer communication across all messengers, and automate it with AI Agents that plug directly into…” Source: RevenueBase Database · checked Sep 27, 2026
24	Redmatter LTD	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	1-10	15 contacts →
	Strong evidence “Fully Autonomous Customer Experiences Our autonomous AI technology handles all customer interactions seamlessly, with no need for human agents.” Source: RevenueBase Database · checked Sep 27, 2026
25	Eyekandy	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	15 contacts →
	Strong evidence “Revolutionising digital sales with our groundbreaking Sales Ambassador™, an AI-powered digital human that's transforming how brands connect with customers at the point of purchase.” Source: RevenueBase Database · checked Sep 27, 2026

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: conversational AI companies for customer support. 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 conversational AI companies for customer support.
Partial evidence: Its own public description names part of conversational AI companies for customer support, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name conversational AI companies for customer support. 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 350 conversational AI companies for customer support based in London, United Kingdom

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Conversational AI companies for customer support based in London, United Kingdom at a glance

As of Sep 27, 2026

19.6%Verified-email coverage

12.6Average contacts per company

1-10Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

228

11-50

102

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 350 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 conversational AI companies for customer support, 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 London, United Kingdom whose own description of what they do matches “conversational AI companies for customer support”. 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 conversational AI companies for customer support), 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 conversational AI companies for customer support, and records with no verified work email. Companies headquartered outside London 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, 863 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 27, 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.

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 conversational AI companies for customer support, 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 conversational AI companies for customer support are there based in London, United Kingdom?

RevenueBase identified 350 conversational AI companies for customer support headquartered in London, 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 in the United Kingdom has the most conversational AI companies for customer support?

London leads the United Kingdom with 350 headquartered companies, followed by Manchester (26) and Edinburgh (13).

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 863 verified decision-maker contacts tracked across these 350 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 27, 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 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.