Company lists · Data refreshed September 2026

Top 25 Customer engagement platform developers based in the United Kingdom

Name: Customer engagement platform developers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 355 companies tracked

RevenueBase identified 355 customer engagement platform developers headquartered in the United Kingdom as of September 2026 and tracks 9,409 professional contacts across them, including 2,610 with verified work emails. London is the largest hub.

This list covers customer engagement platform developers 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 28, 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 28, 2026 86% judged on-target in blind review

355Companies

9,409Contacts tracked

2,610Verified emails

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

Ranked by team size

Top 25 of 355 customer engagement platform developers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to customer engagement platform developers: 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	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,991 contacts →
	Partial 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 28, 2026
2	TLC Worldwide	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	979 contacts →
	Strong evidence “TLC Worldwide is a global leader in customer engagement, loyalty, and reward solutions.” Source: RevenueBase Database · checked Sep 28, 2026
3	Dotdigital	Strong evidence	London Bridge, United KingdomHQ checked Sep 28, 2026	201-500	491 contacts →
	Strong evidence “Dotdigital is a human-first marketing platform that helps you connect with your customers on the channels they know and love.” Source: RevenueBase Database · checked Sep 28, 2026
4	RESQ	Partial evidence	Kingston Upon Hull, United KingdomHQ checked Sep 28, 2026	1,001-5,000	490 contacts →
	Partial evidence “Give your customers a voice with ResQ.” Source: RevenueBase Database · checked Sep 28, 2026
5	Imimobile Part Of Webex	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	433 contacts →
	Indirect evidence “We've moved!” Source: RevenueBase Database · checked Sep 28, 2026
6	Content Guru	Partial evidence	Bracknell, United KingdomHQ checked Sep 28, 2026	501-1,000	428 contacts →
	Partial evidence “Content Guru is a leading global cloud Customer Experience (CX) technology provider and the only ‘challenger’ named in the 2025 Gartner® CCaaS Magic Quadrant™’.” Source: RevenueBase Database · checked Sep 28, 2026
7	MAPP	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	373 contacts →
	Strong evidence “Mapp helps marketers build personalized customer experiences through our SaaS platform, Mapp Marketing Cloud.” Source: RevenueBase Database · checked Sep 28, 2026
8	Reward	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	236 contacts →
	Strong evidence “Founded in 2001, Reward is an industry leader transforming the world of Customer Engagement and Commerce Media.” Source: RevenueBase Database · checked Sep 28, 2026
9	Route 101 LTD	Strong evidence	Bristol, United KingdomHQ checked Sep 28, 2026	51-200	131 contacts →
	Strong evidence “Route 101 offers award-winning customer engagement solutions that help you reduce operational costs, enhance efficiency, and deliver a next-generation customer experience (CX).” Source: RevenueBase Database · checked Sep 28, 2026
10	Actito Previously Smartfocus	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	99 contacts →
	Partial evidence “Marketers spend billions on attracting customers and yet more than 70% of first time interactions with a brand are also the last.” Source: RevenueBase Database · checked Sep 28, 2026
11	Venpep Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	94 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
12	Spotler UK	Indirect evidence	Guildford, United KingdomHQ checked Sep 28, 2026	51-200	86 contacts →
	Indirect evidence “We are Spotler!” Source: RevenueBase Database · checked Sep 28, 2026
13	Signal	Partial evidence	Cheltenham, United KingdomHQ checked Sep 28, 2026	51-200	85 contacts →
	Partial evidence “Signal, a Broadridge Company, is a UK customer communications specialist trusted by leading enterprises in the banking, insurance and social sectors to accelerate digital…” Source: RevenueBase Database · checked Sep 28, 2026
14	EYC	Partial evidence	Richmond, United KingdomHQ checked Sep 28, 2026	51-200	84 contacts →
	Partial evidence “Engage Your Customers; a world leader analytical and customer centric technology company with powerful consulting services.” Source: RevenueBase Database · checked Sep 28, 2026
15	Pobuca	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	78 contacts →
	Partial evidence “Pobuca, the Customer Experience (CX) company.” Source: RevenueBase Database · checked Sep 28, 2026
16	TAP CXM	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	77 contacts →
	Partial evidence “At Tap CXM, we believe businesses do best when they focus on customer experience.” Source: RevenueBase Database · checked Sep 28, 2026
17	CONIQ	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	69 contacts →
	Strong evidence “Coniq is the Total Customer Engagement and Loyalty Company for retail destinations.” Source: RevenueBase Database · checked Sep 28, 2026
18	Icommunix	Strong evidence	Wolverhampton, United KingdomHQ checked Sep 28, 2026	51-200	67 contacts →
	Strong evidence “We are a software house focused around delivering products and solutions to enable smarter customer engagements that are meaningful, effortless, insightful and consistent across…” Source: RevenueBase Database · checked Sep 28, 2026
19	Workbooks CRM	Strong evidence	Reading, United KingdomHQ checked Sep 28, 2026	51-200	64 contacts →
	Strong evidence “Workbooks is a CRM SaaS platform used by growing companies to run their business and engage effectively with their customers.” Source: RevenueBase Database · checked Sep 28, 2026
20	Silverbullet	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	57 contacts →
	Partial evidence “Silverbullet is a leading Data-Driven Customer Experience (CX) Company that empowers the world's leading brands to better understand the data they collect, store, and activate to…” Source: RevenueBase Database · checked Sep 28, 2026
21	Optimiser	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	57 contacts →
	Indirect evidence “Optimiser is a fully configurable business intelligence ecosystem that helps organisations manage relationships, operations, workflows, communications, and commercial activities…” Source: RevenueBase Database · checked Sep 28, 2026
22	POQ	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	54 contacts →
	Partial evidence “Poq is a Software-as-a-Service (SaaS) company that empowers retailers and DTC brands to create highly effective and fully-customized mobile native apps to provide a superior…” Source: RevenueBase Database · checked Sep 28, 2026
23	Boxtec	Strong evidence	Thame, United KingdomHQ checked Sep 28, 2026	51-200	53 contacts →
	Strong evidence “BOXTEC is where innovative, market-leading customer engagement technology is born, nurtured, and equipped to turn your unique business challenges into opportunities.” Source: RevenueBase Database · checked Sep 28, 2026
24	Teleware PLC	Partial evidence	Easingwold, United KingdomHQ checked Sep 28, 2026	51-200	49 contacts →
	Partial evidence “TeleWare design software to help businesses communicate better with their customers and employees by routing communications more effectively.” Source: RevenueBase Database · checked Sep 28, 2026
25	Apteco	Indirect evidence	Warwick, United KingdomHQ checked Sep 28, 2026	51-200	44 contacts →
	Indirect evidence “Apteco is a privately owned software development business specialising in marketing data analysis and multi-channel campaign management solutions.” Source: RevenueBase Database · checked Sep 28, 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: customer engagement platform developers. 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 customer engagement platform developers.
Partial evidence: Its own public description names part of customer engagement platform developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer engagement platform developers. 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 355 customer engagement platform developers based in the United Kingdom

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

As of Sep 28, 2026

27.7%Verified-email coverage

26.5Average contacts per company

11-50Median size (employees)

46.8%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

156

11-50

131

51-200

201-500

501-1,000

1,001-5,000

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 355 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 customer engagement platform developers, 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 “customer engagement platform developers”. 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 customer engagement platform developers), 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 customer engagement platform developers, 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, 2,610 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 28, 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.

Customer engagement platform developers by metro

Customer engagement platform developers in London166

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 customer engagement platform developers, 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 customer engagement platform developers are there based in the United Kingdom?

RevenueBase identified 355 customer engagement platform developers 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 customer engagement platform developers?

London leads with 166 headquartered companies, followed by Manchester (12) and Bracknell (4).

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 2,610 verified decision-maker contacts tracked across these 355 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 28, 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.