Company lists · Data refreshed September 2026

Top 25 Customer engagement companies based in the United Kingdom

RevenueBase identified 471 company matches for customer engagement companies associated with the United Kingdom as of September 2026 and tracks 14,741 professional contacts across them, including 5,712 with verified work emails. London is the largest hub.

This list covers company matches for customer engagement 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 September 21, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built
471Companies
14,741Contacts tracked
5,712Verified emails
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The 25 largest customer engagement companies based in the United Kingdom

Ranked by team size
Top 25 of 471 company matches for customer engagement companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 21, 20261,001-5,0003,309 contacts →

Exact match

“Infobip is a global leader in omnichannel engagement powering a broad range of messaging channels, tools and solutions for advanced customer engagement, authentication and…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchMotherwell, United KingdomHQ recorded Sep 21, 20261,001-5,0001,244 contacts →

Exact match

“Ascensos is now Firstsource.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-500979 contacts →

Exact match

“TLC Worldwide is a global leader in customer engagement, loyalty, and reward solutions.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchWrexham, United KingdomHQ recorded Sep 21, 20261,001-5,000530 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchLondon Bridge, United KingdomHQ recorded Sep 21, 2026201-500491 contacts →

Exact match

“Dotdigital is a human-first marketing platform that helps you connect with your customers on the channels they know and love.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchKingston Upon Hull, United KingdomHQ recorded Sep 21, 20261,001-5,000490 contacts →

Exact match

“Give your customers a voice with ResQ.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 21, 20261,001-5,000433 contacts →

Exact match

“We've moved!”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-500401 contacts →

Exact match

“MVF powers growth for our clients by connecting them to potential customers.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-500373 contacts →

Exact match

“Mapp helps marketers build personalized customer experiences through our SaaS platform, Mapp Marketing Cloud.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200370 contacts →

Exact match

“In a world where everyone’s shouting the same thing, whisper something truly distinctive in all the right ears.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200236 contacts →

Exact match

“Founded in 2001, Reward is an industry leader transforming the world of Customer Engagement and Commerce Media.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchRichmond, United KingdomHQ recorded Sep 21, 2026501-1,000162 contacts →

Exact match

“We are a leading UK customer experience outsourcer, recently named Gold winners for L&D Team of the Year 2025, Best Contact Centre Culture (Large) 2024 and Outsourced Contact…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200145 contacts →

Exact match

“Attio is the AI CRM for the next era of companies.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchBristol, United KingdomHQ recorded Sep 21, 202651-200131 contacts →

Exact match

“Route 101 offers award-winning customer engagement solutions that help you reduce operational costs, enhance efficiency, and deliver a next-generation customer experience (CX).”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchDoxford International Business Park, United KingdomHQ recorded Sep 21, 20261,001-5,000114 contacts →

Exact match

“EC Outsourcing is one of the UK's leading outsourced contact centres.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchHuddersfield, United KingdomHQ recorded Sep 21, 202611-50113 contacts →

Exact match

“We’re Ello, the agency who create everlasting connections between brands and consumers.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchGateshead, United KingdomHQ recorded Sep 21, 202651-200102 contacts →

Exact match

“Since 2010, SaleCycle has developed strong expertise in online shopping behaviors and cutting-edge activation technologies.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20099 contacts →

Exact match

“Marketers spend billions on attracting customers and yet more than 70% of first time interactions with a brand are also the last.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-50098 contacts →

Exact match

“Founded in 1988, RSVP is the oldest provider of contact centre services in the UK.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20097 contacts →

Exact match

“We find your strongest customer voices and amplify their authentic human influence, giving your brand relevance and control in an AI marketing world.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20094 contacts →

Exact match

“A software product development company with over 250 global customers, VenPep builds web apps, mobile apps, and SAAS applications, including its portfolio Jumbow.io & Todook.io.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20092 contacts →

Exact match

“We are customer experience experts, working with our clients on bespoke strategies to engage customers along the entire customer journey.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchGuildford, United KingdomHQ recorded Sep 21, 202651-20086 contacts →

Exact match

“We are Spotler!”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchCheltenham, United KingdomHQ recorded Sep 21, 202651-20085 contacts →

Exact match

“Signal, a Broadridge Company, is a UK customer communications specialist trusted by leading enterprises in the banking, insurance and social sectors to accelerate digital…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20078 contacts →

Exact match

“Pobuca, the Customer Experience (CX) company.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 471 customer engagement companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 5,712 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Customer engagement companies based in the United Kingdom at a glance

As of Sep 21, 2026
38.7%Verified-email coverage
31.3Average contacts per company
1-10Median size (employees)
43.5%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
237
11-50
143
51-200
59
201-500
19
501-1,000
2
1,001-5,000
10

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 471 companies.

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 “customer engagement 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 5,712 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 September 21, 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.

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 “customer engagement companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer engagement companies are there based in the United Kingdom?

RevenueBase identified 471 company matches for customer engagement companies associated with the United Kingdom as of September 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?

Infobip tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most customer engagement companies?

London leads with 205 company records, followed by Manchester (13) and Bristol (11).

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 5,712 professional contacts with verified work emails tracked across these 471 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 September 21, 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 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.