Company lists · Data refreshed September 2026

Top 25 Customer communications platforms based in London, United Kingdom

Name: Customer communications 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 28, 2026 82 companies tracked

RevenueBase identified 82 customer communications platforms headquartered in London, United Kingdom as of September 2026 and tracks 6,571 professional contacts across them, including 2,876 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers customer communications 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 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

82Companies

6,571Contacts tracked

2,876Verified emails

Explore this list → Free signup · no credit card · 500 free credits

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

Ranked by team size

Top 25 of 82 customer communications platforms based in London, 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	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
4	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
5	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
6	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
7	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
8	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
9	Imlink	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	24 contacts →
	Partial evidence “Imlink is an Omnichannel Messaging Platform for Business.” Source: RevenueBase Database · checked Sep 28, 2026
10	Contactengine	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	22 contacts →
	Strong 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 28, 2026
11	Connectiveone	Strong evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
12	Mevrik	Strong evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
13	Umnico	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	18 contacts →
	Strong evidence “One window aggregator for business communication via social networks and messengers with client relationship platform combined.” Source: RevenueBase Database · checked Sep 28, 2026
14	Bluetweak	Strong evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
15	Athena AI	Strong evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
16	HEED	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “Heed is a leading provider of innovative communication solutions for the modern workplace.” Source: RevenueBase Database · checked Sep 28, 2026
17	Dynamic Messaging	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Strong evidence “Dynamic Messaging specialise in developing bespoke automated customer communication solutions.” Source: RevenueBase Database · checked Sep 28, 2026
18	Cagan Tech Limited	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
19	MERX	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	10 contacts →
	Indirect evidence “Merx helps brands sell on messaging channels (e.g.” Source: RevenueBase Database · checked Sep 28, 2026
20	Swiftsell AI	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	9 contacts →
	Partial evidence “Swiftsell, Customer operations that run themselves.” Source: RevenueBase Database · checked Sep 28, 2026
21	APALO	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	7 contacts →
	Strong evidence “THE MOBILE FIRST COMMUNICATION PLATFORM WITH FMC & WebRTC Apalo takes smarter communications to the next level, combining a comprehensive set of collaboration tools and rich…” Source: RevenueBase Database · checked Sep 28, 2026
22	Secure Digital Exchange	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Partial evidence “The Sdx platform simplifies interactions between people and organisations, implementing technology that users can understand and developers can integrate with ease.” Source: RevenueBase Database · checked Sep 28, 2026
23	Kasookoo	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Strong evidence “Kasookoo is a dynamic cloud-native platform that is redefining business communication.” Source: RevenueBase Database · checked Sep 28, 2026
24	Stobee	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Partial evidence “At Stobee, we provide the space for you to enhance customer interactions, making more memorable meaningful relationships.” Source: RevenueBase Database · checked Sep 28, 2026
25	Bigradar	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Partial evidence “It all starts with a small conversation with a customer.” 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 82 customer communications platforms based in London, United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,876 reachable decision-makers.

Free signup · no credit card

View the full list →

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

As of Sep 28, 2026

43.8%Verified-email coverage

80.1Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 82 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 London, 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 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, 2,876 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.

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 London, United Kingdom?

RevenueBase identified 82 customer communications 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 in the United Kingdom has the most customer communications platforms?

London leads the United Kingdom 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 2,876 verified decision-maker contacts tracked across these 82 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.

Ready to reach these companies? Verified emails and direct dials for all 82 customer communications platforms based in London, United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Customer communications platforms by geography

Browse the directory

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.