Company lists · Data refreshed September 2026

Top 25 Customer communications platforms based in the United Kingdom

Name: Customer communications platforms 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 187 companies tracked

RevenueBase identified 187 customer communications platforms headquartered in the United Kingdom as of September 2026 and tracks 10,179 professional contacts across them, including 4,105 with verified work emails. London is the largest hub.

This list covers customer communications platforms 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

187Companies

10,179Contacts tracked

4,105Verified emails

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The 25 largest customer communications platforms based in the United Kingdom

Ranked by team size

Top 25 of 187 customer communications platforms 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 communications platforms: 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	Infobip	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	3,309 contacts →
	Partial evidence “Infobip is a global leader in omnichannel engagement powering a broad range of messaging channels, tools and solutions for advanced customer engagement, authentication and…” Source: RevenueBase Database · checked Sep 28, 2026
2	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
3	Moneypenny	Partial evidence	Wrexham, United KingdomHQ checked Sep 28, 2026	1,001-5,000	530 contacts →
	Partial evidence “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…” 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	Smart Communications	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	373 contacts →
	Strong evidence “Smart Communications is a leading customer engagement technology provider for regulated industries.” Source: RevenueBase Database · checked Sep 28, 2026
8	MBA Group LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	222 contacts →
	Indirect evidence “To us, the ability to communicate effectively is not a commodity and we are proud to possess the right balance of technology and services.” Source: RevenueBase Database · checked Sep 28, 2026
9	Citnow Group	Partial evidence	Wokingham, United KingdomHQ checked Sep 28, 2026	201-500	196 contacts →
	Partial evidence “CitNOW Group provides innovative solutions that unite customers and retailers to provide improved customer experiences, using technology as the key enabler.” Source: RevenueBase Database · checked Sep 28, 2026
10	Echo-U LTD	Indirect evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 28, 2026	201-500	140 contacts →
	Indirect evidence “Echoing our clients in every conversation.” Source: RevenueBase Database · checked Sep 28, 2026
11	Route 101 LTD	Partial evidence	Bristol, United KingdomHQ checked Sep 28, 2026	51-200	131 contacts →
	Partial 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
12	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
13	Signal	Strong evidence	Cheltenham, United KingdomHQ checked Sep 28, 2026	51-200	85 contacts →
	Strong 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	engagely.ai	Strong evidence	Watford, United KingdomHQ checked Sep 28, 2026	51-200	74 contacts →
	Strong evidence “Engagely.ai is a leading No code total CX Platform with out-of-the-box CX automation solutions that helps enterprises automate customer support and engagement & thereby creates…” Source: RevenueBase Database · checked Sep 28, 2026
15	Icommunix	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 28, 2026	51-200	67 contacts →
	Partial 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
16	Nebula	Strong evidence	Guildford, United KingdomHQ checked Sep 28, 2026	51-200	62 contacts →
	Strong evidence “Nebula is a leading SaaS provider of workplace communications software, delivering powerful, secure, and adaptable solutions and applications for voice, messaging, customer…” Source: RevenueBase Database · checked Sep 28, 2026
17	Teleware PLC	Strong evidence	Easingwold, United KingdomHQ checked Sep 28, 2026	51-200	49 contacts →
	Strong 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
18	Customerknect	Strong evidence	Seaham, United KingdomHQ checked Sep 28, 2026	51-200	45 contacts →
	Strong evidence “CustomerKNECT aim to be the number one choice for innovative customer communications.” Source: RevenueBase Database · checked Sep 28, 2026
19	Esendex	Partial evidence	Nottingham, United KingdomHQ checked Sep 28, 2026	201-500	41 contacts →
	Partial evidence “Esendex is a premier global provider of business communication solutions, specialising in Mobile Messaging.” Source: RevenueBase Database · checked Sep 28, 2026
20	Qcontact	Partial evidence	Manchester, United KingdomHQ checked Sep 28, 2026	11-50	37 contacts →
	Partial evidence “One platform.” Source: RevenueBase Database · checked Sep 28, 2026
21	Bringo	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	33 contacts →
	Strong evidence “We are here to make your digital customer engagement simple yet robust through our range of powerful, fast and secure channels including our own unique platform that allows us to…” Source: RevenueBase Database · checked Sep 28, 2026
22	Quickblox	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	31 contacts →
	Strong evidence “QuickBlox is a leading cloud communication platform helping businesses bring AI-driven chat, video, and automation into their digital products-quickly, securely, and at scale.” Source: RevenueBase Database · checked Sep 28, 2026
23	rocketphone.ai	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	30 contacts →
	Partial evidence “RocketPhone.ai empowers organisations to unlock the full potential of their customer conversations by transforming them into actionable insights.” Source: RevenueBase Database · checked Sep 28, 2026
24	Build Concierge	Strong evidence	Leeds, United KingdomHQ checked Sep 28, 2026	11-50	29 contacts →
	Strong evidence “Build Concierge is your AI powered omnichannel customer engagement platform that converts, automates and scales.” Source: RevenueBase Database · checked Sep 28, 2026
25	Mission Labs	Partial evidence	Rossendale, United KingdomHQ checked Sep 28, 2026	51-200	27 contacts →
	Partial evidence “At Mission Labs we have a single vision: to power the future of business communications.” 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 communications platforms. 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 communications platforms.
Partial evidence: Its own public description names part of customer communications platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer communications platforms. 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 187 customer communications platforms based in the United Kingdom

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Customer communications platforms based in the United Kingdom at a glance

As of Sep 28, 2026

40.3%Verified-email coverage

54.4Average contacts per company

11-50Median size (employees)

43.9%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 187 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 communications platforms, 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 communications platforms”. 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 communications platforms), 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 communications platforms, 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, 4,105 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 communications platforms by metro

Customer communications platforms in London82

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 communications platforms, 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 communications platforms are there based in the United Kingdom?

RevenueBase identified 187 customer communications platforms 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?

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

Which city has the most customer communications platforms?

London leads with 82 headquartered companies, followed by Manchester (6) and Bracknell (3).

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 4,105 verified decision-maker contacts tracked across these 187 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.