Company lists · Data refreshed September 2026

Top 25 Customer messaging platforms based in London, United Kingdom

Name: Customer messaging platforms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 10, 2026 119 companies tracked

RevenueBase identified 119 customer messaging platforms headquartered in London, United Kingdom as of September 2026 and tracks 7,105 professional contacts across them, including 3,217 with verified work emails and 313 with mobile numbers. London is the largest hub.

This list covers customer messaging platforms headquartered in London, 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 10, 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 10, 2026 86% judged on-target in blind review

119Companies

7,105Contacts tracked

3,217Verified emails

313Mobile numbers

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The 25 largest customer messaging platforms based in London, United Kingdom

Ranked by team size

Top 25 of 119 customer messaging platforms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 10, 2026. RevenueBase Smart Search rates how each company's information relates to customer messaging 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	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	1,001-5,000	3,309 contacts →
	Strong 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 10, 2026
2	Quantanite	Partial evidence	London, United KingdomHQ checked Sep 10, 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 10, 2026
3	Imimobile Part Of Webex	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	1,001-5,000	433 contacts →
	Indirect evidence “We've moved!” Source: RevenueBase Database · checked Sep 10, 2026
4	Tyntec	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	103 contacts →
	Partial evidence “tyntec is a cloud communications provider enabling businesses to communicate easier with their customers, workforce and machines.” Source: RevenueBase Database · checked Sep 10, 2026
5	Actito Previously Smartfocus	Partial evidence	London, United KingdomHQ checked Sep 10, 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 10, 2026
6	Venpep Group	Partial evidence	London, United KingdomHQ checked Sep 10, 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 10, 2026
7	Bringo	Strong evidence	London, United KingdomHQ checked Sep 10, 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 10, 2026
8	Quickblox	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	31 contacts →
	Partial 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 10, 2026
9	Nanosemantics LAB	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	30 contacts →
	Indirect evidence “Over the 14 years of experience, Nanosemantics Lab has accumulated multiple technologies for human-machine communication, in addition to the vast knowledge database of dialogs in…” Source: RevenueBase Database · checked Sep 10, 2026
10	Imlink	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	24 contacts →
	Strong evidence “Imlink is an Omnichannel Messaging Platform for Business.” Source: RevenueBase Database · checked Sep 10, 2026
11	Contactengine	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	22 contacts →
	Partial evidence “ContactEngine is an award-winning proactive conversational AI technology used by large corporations across industries to automate customer communications.” Source: RevenueBase Database · checked Sep 10, 2026
12	Connectiveone	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	22 contacts →
	Strong evidence “ConnectiveOne is an omnichannel AI communication platform designed to help companies deliver top-tier customer service.” Source: RevenueBase Database · checked Sep 10, 2026
13	Mevrik	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	18 contacts →
	Strong evidence “Mevrik is an AI-powered all-in-one platform to connect, engage, and delight customers across digital channels.” Source: RevenueBase Database · checked Sep 10, 2026
14	Umnico	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	18 contacts →
	Partial evidence “One window aggregator for business communication via social networks and messengers with client relationship platform combined.” Source: RevenueBase Database · checked Sep 10, 2026
15	Bluetweak	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	16 contacts →
	Strong evidence “BlueTweak is an AI-powered omnichannel customer support platform that brings every conversation-voice, email, chat, and social-into one interaction timeline.” Source: RevenueBase Database · checked Sep 10, 2026
16	Athena AI	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	16 contacts →
	Strong evidence “Athena AI is a no-code conversational platform that helps businesses unify customer communication across all messengers, and automate it with AI Agents that plug directly into…” Source: RevenueBase Database · checked Sep 10, 2026
17	HEED	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	15 contacts →
	Indirect evidence “Heed is a leading provider of innovative communication solutions for the modern workplace.” Source: RevenueBase Database · checked Sep 10, 2026
18	Dynamic Messaging	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	13 contacts →
	Strong evidence “Dynamic Messaging specialise in developing bespoke automated customer communication solutions.” Source: RevenueBase Database · checked Sep 10, 2026
19	Cagan Tech Limited	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	12 contacts →
	Partial evidence “We are passionate about your customer and the experience they have with your brand.” Source: RevenueBase Database · checked Sep 10, 2026
20	Unomok	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	11 contacts →
	Partial evidence “Mok is a Notifications Infrastructure + User Engagement Platform” Source: RevenueBase Database · checked Sep 10, 2026
21	MERX	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	10 contacts →
	Partial evidence “Merx helps brands sell on messaging channels (e.g.” Source: RevenueBase Database · checked Sep 10, 2026
22	zappr.ai	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	10 contacts →
	Indirect evidence “At Zappr.AI, we're passionate about helping businesses, teams, and individuals unlock the full potential of artificial intelligence.” Source: RevenueBase Database · checked Sep 10, 2026
23	Swiftsell AI	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	9 contacts →
	Partial evidence “Swiftsell, Customer operations that run themselves.” Source: RevenueBase Database · checked Sep 10, 2026
24	Own-Kind	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	8 contacts →
	Strong evidence “Own-Kind is a Customer Engagement platform for Retail & E-commerce.” Source: RevenueBase Database · checked Sep 10, 2026
25	Lyberate	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	8 contacts →
	Partial evidence “Lyberate drives B2B growth through AI-powered rich mobile messaging.” Source: RevenueBase Database · checked Sep 10, 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 messaging 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 messaging platforms.
Partial evidence: Its own public description names part of customer messaging platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer messaging 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 119 customer messaging platforms based in London, United Kingdom

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Customer messaging platforms based in London, United Kingdom at a glance

As of Sep 10, 2026

45.3%Verified-email coverage

4.4%Mobile-number coverage

59.7Average contacts per company

1-10Median size (employees)

101.7%Largest-city concentration · London

Sep 10, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 12.0d

2,9260–30

24831–60

361–90

790–180

33180+

Company record updated

Median 64.0d

00–30

3,24331–60

2,82161–90

66290–180

379180+

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 messaging 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 London, United Kingdom whose own description of what they do matches “customer messaging 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 messaging 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 messaging platforms, and records with no verified work email. Companies headquartered outside London 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, 3,217 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 10, 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 messaging platforms by metro in the United Kingdom

Customer messaging platforms in London121

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 messaging 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 messaging platforms are there based in London, United Kingdom?

RevenueBase identified 119 customer messaging platforms headquartered in London, 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 messaging platforms?

London leads with 121 headquartered companies, followed by Manchester (9) and Bristol (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 3,217 verified decision-maker contacts tracked across these 119 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 10, 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.