Company lists · Data refreshed September 2026

Top 25 Messaging platform companies based in London, United Kingdom

Name: Messaging platform companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 50 companies tracked

RevenueBase identified 50 messaging platform companies headquartered in London, United Kingdom as of September 2026 and tracks 3,676 professional contacts across them, including 2,266 with verified work emails and 158 with mobile numbers. London is the largest hub.

This list covers messaging platform companies 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 13, 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 13, 2026 86% judged on-target in blind review

50Companies

3,676Contacts tracked

2,266Verified emails

158Mobile numbers

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

The 25 largest messaging platform companies based in London, United Kingdom

Ranked by team size

Top 25 of 50 messaging platform companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to messaging platform companies: 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 13, 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 13, 2026
2	Quantanite	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1,001-5,000	1,991 contacts →
	Indirect 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 13, 2026
3	Venpep Group	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	94 contacts →
	Indirect 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 13, 2026
4	Dtsocialize	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	39 contacts →
	Partial evidence “DT Socialize is a new generation technology company offering solutions ranging from financial services, messaging and socializing tools, and digital assets brought together in a…” Source: RevenueBase Database · checked Sep 13, 2026
5	Quickblox	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
6	Imlink	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	24 contacts →
	Strong evidence “Imlink is an Omnichannel Messaging Platform for Business.” Source: RevenueBase Database · checked Sep 13, 2026
7	Connectiveone	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	22 contacts →
	Partial evidence “ConnectiveOne is an omnichannel AI communication platform designed to help companies deliver top-tier customer service.” Source: RevenueBase Database · checked Sep 13, 2026
8	Umnico	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
9	YEO Messaging	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	16 contacts →
	Indirect evidence “YEO (pronounced ‘Yo’, and an acronym for Your Eye Only) was founded by a team of technology, security and design specialists.” Source: RevenueBase Database · checked Sep 13, 2026
10	Athena AI	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	16 contacts →
	Partial 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 13, 2026
11	HEED	Indirect evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
12	Dynamic Messaging	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	13 contacts →
	Partial evidence “Dynamic Messaging specialise in developing bespoke automated customer communication solutions.” Source: RevenueBase Database · checked Sep 13, 2026
13	Cagan Tech Limited	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	12 contacts →
	Indirect evidence “We are passionate about your customer and the experience they have with your brand.” Source: RevenueBase Database · checked Sep 13, 2026
14	Aviso Messaging	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	11 contacts →
	Partial evidence “AVISO Messaging, a global messaging aggregator, was created from the partnership between 42com and Vladimir Smal.” Source: RevenueBase Database · checked Sep 13, 2026
15	MERX	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	10 contacts →
	Partial evidence “Merx helps brands sell on messaging channels (e.g.” Source: RevenueBase Database · checked Sep 13, 2026
16	zappr.ai	Indirect evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
17	Swiftsell AI	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	9 contacts →
	Indirect evidence “Swiftsell, Customer operations that run themselves.” Source: RevenueBase Database · checked Sep 13, 2026
18	NYOUM	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	7 contacts →
	Indirect evidence “NYOUM is A Private Social Network.” Source: RevenueBase Database · checked Sep 13, 2026
19	Secure Digital Exchange	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
20	Stobee	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	6 contacts →
	Indirect evidence “At Stobee, we provide the space for you to enhance customer interactions, making more memorable meaningful relationships.” Source: RevenueBase Database · checked Sep 13, 2026
21	Quicksms	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	4 contacts →
	Partial evidence “QuickSMS is a UK-based messaging provider trusted by government bodies and leading brands to deliver secure, scalable A2P SMS, RCS, and WhatsApp communications.” Source: RevenueBase Database · checked Sep 13, 2026
22	Ebotify	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	4 contacts →
	Partial evidence “eBotify is an AI-driven conversational bot-building platform to create tailor-made chatbots for Lead generation, Live chat support, Interactive Landing Pages, Surveys, inquiries…” Source: RevenueBase Database · checked Sep 13, 2026
23	Everycatch	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence “At EveryCatch, we revolutionise customer engagement and lead management for small businesses.” Source: RevenueBase Database · checked Sep 13, 2026
24	Olivya Limited	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence “Experience the future of customer engagement with human-like interactions that transform business communication.” Source: RevenueBase Database · checked Sep 13, 2026
25	Orimon AI	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	2 contacts →
	Partial evidence “Orimon.ai - The Premier Sales-Boosting Chatbot Platform At Orimon.ai, we offer the most sophisticated, sales-enabling chatbot builder designed to transform your customer…” Source: RevenueBase Database · checked Sep 13, 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: messaging platform companies. 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 messaging platform companies.
Partial evidence: Its own public description names part of messaging platform companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name messaging platform companies. 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 50 messaging platform companies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,266 reachable decision-makers.

Free signup · no credit card

View the full list →

Messaging platform companies based in London, United Kingdom at a glance

As of Sep 13, 2026

61.6%Verified-email coverage

4.3%Mobile-number coverage

73.5Average contacts per company

1-10Median size (employees)

64.0%Largest-city concentration · London

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Freshness & accuracy

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

Email last verified

Median 15.0d

1,7590–30

46431–60

1161–90

690–180

26180+

Company record updated

Median 58.0d

00–30

1,93631–60

1,24961–90

29690–180

195180+

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 messaging platform companies, 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 “messaging platform companies”. 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 messaging platform companies), 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 messaging platform companies, 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, 2,266 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 13, 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.

Messaging platform companies by metro in the United Kingdom

Messaging platform companies in London32

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 messaging platform companies, 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 messaging platform companies are there based in London, United Kingdom?

RevenueBase identified 50 messaging platform companies 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 messaging platform companies?

London leads with 32 headquartered companies, followed by Cheltenham (2) and Coventry (2).

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 2,266 verified decision-maker contacts tracked across these 50 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 13, 2026.

Ready to reach these companies? Verified emails and direct dials for all 50 messaging platform companies based in London, United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Messaging platform companies by geography

Browse the directory

Browse: Companies home · Messaging platform companies in United Kingdom · All United Kingdom lists · All Messaging platform companies lists · New lists

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.