Company lists · Data verified August 2026

Top 25 Customer engagement platform companies based in the United Kingdom

Name: Customer engagement platform 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 431 companies tracked

There are 431 customer engagement platform companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 109,229 professional contacts across them, including 65,267 with verified work emails and 31,880 with mobile numbers. London is the largest hub.

This list covers customer engagement platform 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.

431Companies

109,229Contacts tracked

65,267Verified emails

31,880Mobile numbers

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The 25 largest customer engagement platform companies based in the United Kingdom

Ranked by team size

Top 25 of 431 customer engagement platform 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	Salesforce	London	10001+	85,557	58,153
2	24 7.ai	London	10001+	8,414	547
3	8x8	Aylesbury	1,001-5,000	2,427	1,335
4	BRAZE	London	1,001-5,000	2,133	1,457
5	Attentive	London	1,001-5,000	1,328	230
6	TLC Worldwide	London	201-500	986	197
7	Iterable	London	501-1,000	766	489
8	On24	London	501-1,000	623	319
9	RESQ	Seaham	1,001-5,000	493	149
10	Imimobile Part Of Webex	London	1,001-5,000	436	54
11	Pelatro	London	201-500	343	145
12	Airship	London	201-500	295	206
13	Act-On Software	Reading	201-500	209	66
14	Agentforce Commerce	London	10001+	175	99
15	ATTIO	London	51-200	141	92
16	DIXA	London	51-200	141	6
17	Ometria	London	51-200	135	98
18	Route 101 LTD	Bristol	51-200	135	93
19	Kognitiv Corporation	London	201-500	115	3
20	Antavo AI Loyalty Cloud	London	51-200	113	73
21	Massive Rocket Global Braze & Snowflake Agency	London	51-200	103	62
22	Emailclub	London	51-200	103	39
23	Mention ME	London	51-200	97	50
24	Goodays	London	51-200	92	51
25	Spotler UK	Guildford	51-200	84	18

Showing 25 of 431 customer engagement platform companies based in the United Kingdom

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Customer engagement platform companies based in the United Kingdom at a glance

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 216 HQs

31,880Contacts with mobile numbers

135Emails re-verified in last 30 days

Companies by employee count

1-10

198

11-50

137

51-200

201-500

501-1,000

1,001-5,000

10001+

Customer engagement platform companies by metro

Metro	Companies
Customer engagement platform companies in London	216
Customer engagement platform companies in Manchester	13
Customer engagement platform companies in Glasgow	5
Customer engagement platform companies in Leeds	5
Customer engagement platform companies in Cambridge	5
Customer engagement platform companies in Poole	4
Customer engagement platform companies in Belfast	4

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 “customer engagement platform 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; 135 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 customer engagement platform companies are there based in the United Kingdom?

There are 431 customer engagement platform companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Salesforce, headquartered in London, tops this list with the largest team on record.

Which city has the most customer engagement platform companies?

London leads with 216 headquartered companies, followed by Manchester (13) and Glasgow (5).

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 65,267 verified decision-maker contacts tracked across these 431 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.

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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.