Company lists · Data verified August 2026

Top 25 Conversational AI companies based in the United Kingdom

Name: Conversational AI companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 368 companies tracked

There are 368 conversational AI companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 11,499 professional contacts across them, including 1,420 with verified work emails and 586 with mobile numbers. London is the largest hub.

This list covers conversational AI companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

368Companies

11,499Contacts tracked

1,420Verified emails

586Mobile numbers

Unlock all 368 companies Free account · no credit card · 2 minutes

The 25 largest conversational AI companies based in the United Kingdom

Ranked by team size

Top 25 of 368 conversational AI companies based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	24 7.ai	London	10001+	8,414	547
2	GMS	London	501-1,000	490	158
3	Polyai	London	201-500	325	82
4	Decagon	London	201-500	290	171
5	Streetbees	London	51-200	96	7
6	Spitch	London	51-200	79	32
7	Evaluagent	Middlesbrough	51-200	55	29
8	Gravitas AI	London	11-50	51	28
9	Core Cognitics	Ipswich	51-200	50	9
10	Sovran AI	London	11-50	46	9
11	Gradient Labs	London	11-50	40	27
12	Sentisum	London	11-50	38	14
13	IOVOX	London	11-50	34	26
14	Veyn AI	London	11-50	32	6
15	Agile Loop	London	11-50	30	3
16	Nanosemantics LAB	London	51-200	29	7
17	Contactengine	London	51-200	22	13
18	Taap Think Build RUN	Borehamwood	11-50	20	12
19	Envolve Tech	Newport	11-50	17	6
20	Puppeteer AI	London	11-50	13	7
21	Tovie AI	London	11-50	12	7
22	The CAI Company	Bristol	11-50	10	7
23	IT Solutions	London	11-50	10	6
24	Deepzen	London	11-50	10	4
25	zappr.ai	London	11-50	10	2

Showing 25 of 368 conversational AI companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,420 reachable decision-makers.

Free account · no credit card

See all 368 companies

Conversational AI companies based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 204 HQs

586Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

241

11-50

108

51-200

201-500

501-1,000

10001+

Conversational AI companies by metro

Metro	Companies
Conversational AI companies in London	204
Conversational AI companies in Manchester	16
Conversational AI companies in Edinburgh	10
Conversational AI companies in Bristol	6
Conversational AI companies in Glasgow	5
Conversational AI companies in Cambridge	3
Conversational AI companies in Milton Keynes	3

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “conversational AI companies”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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: Contact records re-verify on a rolling cadence; 3 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many conversational AI companies are there based in the United Kingdom?

There are 368 conversational AI companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

24 7.ai, headquartered in London, tops this list with the largest team on record.

Which city has the most conversational AI companies?

London leads with 204 headquartered companies, followed by Manchester (16) and Edinburgh (10).

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 1,420 verified decision-maker contacts tracked across these 368 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 368 conversational AI companies based in the United Kingdom. Start with a free account, no credit card.

Get the full list

Related lists

Conversational AI companies by geography

Browse the directory

Browse: Companies home · All United Kingdom lists · All Conversational AI companies lists · New lists

About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.