Company lists · Data refreshed September 2026

Top 25 Vendor engagement platforms based in London, United Kingdom

Name: Vendor engagement 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 13, 2026 80 companies tracked

RevenueBase identified 80 vendor engagement platforms headquartered in London, United Kingdom as of September 2026 and tracks 688 professional contacts across them, including 251 with verified work emails and 57 with mobile numbers. London is the largest hub.

This list covers vendor engagement 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 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

80Companies

688Contacts tracked

251Verified emails

57Mobile numbers

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The 25 largest vendor engagement platforms based in London, United Kingdom

Ranked by team size

Top 25 of 80 vendor engagement platforms 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 vendor engagement 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	Qogita	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	184 contacts →
	Partial evidence “Qogita is a leading global wholesale B2B platform that offers a wide variety of products, brands and categories across geographies.” Source: RevenueBase Database · checked Sep 13, 2026
2	ELCOM	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	90 contacts →
	Indirect evidence “As the world’s first cloud-based procurement technology company, we at ELCOM have focused decades of know-how on pioneering flexible proprietary technology with one aim: to help…” Source: RevenueBase Database · checked Sep 13, 2026
3	Nayaone	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	40 contacts →
	Indirect evidence “NayaOne is the Vendor Delivery Infrastructure for financial institutions.” Source: RevenueBase Database · checked Sep 13, 2026
4	Materials Market	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	35 contacts →
	Indirect evidence “Materials Market is a UK‑based digital marketplace for construction materials, built to make buying and supplying building materials simpler, clearer and more predictable.” Source: RevenueBase Database · checked Sep 13, 2026
5	Brooklyn Solutions	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	25 contacts →
	Indirect evidence “Neglecting post-contract management can cost up to 15% in value.” Source: RevenueBase Database · checked Sep 13, 2026
6	Event UK	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	19 contacts →
	Indirect evidence “At Event UK, we connect great businesses with great people, seamlessly.” Source: RevenueBase Database · checked Sep 13, 2026
7	Stock In The Channel	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	18 contacts →
	Indirect evidence “FIND - Search over 6 Million IT hardware, software, parts, office, telecoms and CE products - Compare your own personalized prices in one place - Include all your suppliers + your…” Source: RevenueBase Database · checked Sep 13, 2026
8	Flowla	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	15 contacts →
	Indirect evidence “Every revenue team has the same stack now.” Source: RevenueBase Database · checked Sep 13, 2026
9	Wedissimo	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	12 contacts →
	Indirect evidence “Wedissimo helps couples find and book wedding suppliers by date and location, with real-time availability, transparent pricing, supplier videos, video consultations and secure…” Source: RevenueBase Database · checked Sep 13, 2026
10	ADD To Event	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	11 contacts →
	Indirect evidence “At Add to Event our mission is to help the world to celebrate better events by seamlessly connecting anyone planning an event with their perfect suppliers.” Source: RevenueBase Database · checked Sep 13, 2026
11	Oboloo Procurement Software	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	11 contacts →
	Partial evidence “oboloo – The Only Truly Free-Forever Procurement Software oboloo is the only procurement platform on the market that offers a genuinely free-forever plan, with no time limits, no…” Source: RevenueBase Database · checked Sep 13, 2026
12	Gatekeeper	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	9 contacts →
	Partial evidence “Gatekeeper is a next generation contract and supplier management platform that was born in the cloud and works on any device.” Source: RevenueBase Database · checked Sep 13, 2026
13	Markit UK	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	5 contacts →
	Indirect evidence “Thousands of international companies across 6 continents are saving considerable amounts of time and money by sourcing and buying their IT hardware and accessories through…” Source: RevenueBase Database · checked Sep 13, 2026
14	D2e-Labs	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	5 contacts →
	Partial evidence “D2E-Labs is building the leading marketplace services platform by bringing together first-class tech-enabled service providers through a proactive consolidation strategy.” Source: RevenueBase Database · checked Sep 13, 2026
15	Advanced Commerce	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	5 contacts →
	Partial evidence “Advanced Commerce brings GrapheneHC to retailers, a revolutionary new merchandising platform designed to provide retailers with all the tools they need to merchandise their online…” Source: RevenueBase Database · checked Sep 13, 2026
16	SERFY	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	5 contacts →
	Partial evidence “Serfy is a modern management platform which directly connects the client and the executor.” Source: RevenueBase Database · checked Sep 13, 2026
17	British Marketplace	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	5 contacts →
	Partial evidence “British Marketplace’ is a UK based E-commerce platform.” Source: RevenueBase Database · checked Sep 13, 2026
18	SPONA	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	5 contacts →
	Partial evidence “Spona is a global B2B platform designed to help companies discover, connect with, and manage trusted digital service providers worldwide.” Source: RevenueBase Database · checked Sep 13, 2026
19	Buildbuddy UK	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	4 contacts →
	Partial evidence “Founded by industry professionals in 2023, BuildBuddy is a next-generation platform for SME builders.” Source: RevenueBase Database · checked Sep 13, 2026
20	Trade Marketplaces	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	4 contacts →
	Indirect evidence “Trade Marketplaces is re-imagining international trade through AI-powered indirect procurement infrastructure.” Source: RevenueBase Database · checked Sep 13, 2026
21	Metroun Quantity Surveyors	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence “At Metroun, we are obsessively passionate about supporting businesses and individuals to maximise their commercial confidence.” Source: RevenueBase Database · checked Sep 13, 2026
22	Samewave	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence “We are a new breed of business management software that banishes bad meetings, increases productivity & drives your business forward.” Source: RevenueBase Database · checked Sep 13, 2026
23	ZELPH	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence “Use Zelph to launch a multi-vendor B2C or B2B marketplace.” Source: RevenueBase Database · checked Sep 13, 2026
24	channelyze.io	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	3 contacts →
	Partial evidence “Channelyze is a cloud-based software platform that helps you manage your channel partners effectively.” Source: RevenueBase Database · checked Sep 13, 2026
25	Agencybox	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence “AgencyBox is a Comparerecruit.com Limited company with offices in London and Bath.” 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: vendor engagement 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 vendor engagement platforms.
Partial evidence: Its own public description names part of vendor engagement platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name vendor engagement 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 80 vendor engagement platforms based in London, United Kingdom

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Vendor engagement platforms based in London, United Kingdom at a glance

As of Sep 13, 2026

36.5%Verified-email coverage

8.3%Mobile-number coverage

8.6Average contacts per company

1-10Median size (employees)

95.0%Largest-city concentration · London

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

5,001-10,000

Freshness & accuracy

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

Email last verified

Median 16.0d

2020–30

4731–60

061–90

090–180

2180+

Company record updated

Median 65.0d

00–30

31031–60

25061–90

8990–180

39180+

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 vendor engagement 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 “vendor engagement 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 vendor engagement 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 vendor engagement 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, 251 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.

Vendor engagement platforms by metro in the United Kingdom

Vendor engagement platforms in London76

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 vendor engagement 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 vendor engagement platforms are there based in London, United Kingdom?

RevenueBase identified 80 vendor engagement 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?

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

Which city has the most vendor engagement platforms?

London leads with 76 headquartered companies, followed by Manchester (6) and Edinburgh (5).

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 251 verified decision-maker contacts tracked across these 80 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.

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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.