Company lists · Data refreshed September 2026

Top 25 Business intelligence and research firms based in London, United Kingdom

Name: Business intelligence and research firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 8, 2026 705 companies tracked

RevenueBase identified 705 business intelligence and research firms headquartered in London, United Kingdom as of September 2026 and tracks 61,031 professional contacts across them, including 21,126 with verified work emails and 6,362 with mobile numbers. London is the largest hub.

This list covers business intelligence and research firms 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 8, 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 8, 2026 86% judged on-target in blind review

705Companies

61,031Contacts tracked

21,126Verified emails

6,362Mobile numbers

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The 25 largest business intelligence and research firms based in London, United Kingdom

Ranked by team size

Top 25 of 705 business intelligence and research firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 8, 2026. RevenueBase Smart Search rates how each company's information relates to business intelligence and research firms: 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	Kantar	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	10001+	15,564 contacts →
	Indirect evidence “Kantar is the world’s leading marketing data and analytics business.” Source: RevenueBase Database · checked Sep 8, 2026
2	IHS Markit	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	10001+	5,546 contacts →
	Indirect evidence “IHS Markit has merged with S&P Global.” Source: RevenueBase Database · checked Sep 8, 2026
3	Acuity Knowledge Partners	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	5,001-10,000	5,009 contacts →
	Partial evidence “Acuity Knowledge Partners (Acuity) is a leading provider of bespoke research, analytics and technology solutions to the financial services sector, including asset managers…” Source: RevenueBase Database · checked Sep 8, 2026
4	Globaldata PLC	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	1,001-5,000	2,779 contacts →
	Indirect evidence “In a world drowning in data, we deliver clarity.” Source: RevenueBase Database · checked Sep 8, 2026
5	Dialectica	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	1,001-5,000	2,437 contacts →
	Indirect evidence “Dialectica is a B2B information services firm that serves the world's top business professionals, by enabling them to gather real-time information and insights from industry…” Source: RevenueBase Database · checked Sep 8, 2026
6	Euromonitor International	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	1,001-5,000	2,068 contacts →
	Partial evidence “Euromonitor International leads the world in global market intelligence into industries, companies, economies and consumers.” Source: RevenueBase Database · checked Sep 8, 2026
7	Ipsos In The UK	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	1,001-5,000	1,621 contacts →
	Indirect evidence “In our world of rapid change, the need for reliable information to make confident decisions has never been greater.” Source: RevenueBase Database · checked Sep 8, 2026
8	Mintel	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	1,001-5,000	1,475 contacts →
	Indirect evidence “At Mintel, we empower businesses to navigate the future with confidence.” Source: RevenueBase Database · checked Sep 8, 2026
9	PEI	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	501-1,000	913 contacts →
	Indirect evidence “PEI gives you the decisive edge – verified data, award-winning expertise and privileged access to the people that matter, all in one place.” Source: RevenueBase Database · checked Sep 8, 2026
10	The Smart Cube	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	501-1,000	702 contacts →
	Partial evidence “We provide high performing intelligence that answers critical business questions for leading companies around the world.” Source: RevenueBase Database · checked Sep 8, 2026
11	Infiniti Research LTD	Strong evidence	London, United KingdomHQ checked Sep 8, 2026	501-1,000	651 contacts →
	Strong evidence “Infiniti Research is a leading provider of market intelligence and customer intelligence solutions with 20+ years’ experience spanning across 20+ industries.” Source: RevenueBase Database · checked Sep 8, 2026
12	LAW Business Research	Strong evidence	London, United KingdomHQ checked Sep 8, 2026	501-1,000	637 contacts →
	Strong evidence “Law Business Research (LBR) is a technology-enabled information services business powering the global legal industry with intelligence, analytics and performance data.” Source: RevenueBase Database · checked Sep 8, 2026
13	Savanta	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	501-1,000	464 contacts →
	Partial evidence “Savanta is a fast-growing data, market research and advisory company.” Source: RevenueBase Database · checked Sep 8, 2026
14	IFF Research	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	420 contacts →
	Partial evidence “Established in 1965, IFF is a social and market research agency who helps people make better informed decisions.” Source: RevenueBase Database · checked Sep 8, 2026
15	ISI Markets	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	501-1,000	409 contacts →
	Indirect evidence “ISI enjoys a 30 year history assembling the most complete, authoritative information set on emerging markets.” Source: RevenueBase Database · checked Sep 8, 2026
16	Ronin International	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	312 contacts →
	Partial evidence “RONIN International is an independent B2B market research company specialising in business, healthcare and tech studies.” Source: RevenueBase Database · checked Sep 8, 2026
17	4most	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	201-500	270 contacts →
	Indirect evidence “We are 4most: the go-to analytics consultancy for financial institutions who want to make better, data-driven decisions with confidence.” Source: RevenueBase Database · checked Sep 8, 2026
18	Research Partnership	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	201-500	259 contacts →
	Partial evidence “We are now Inizio Ignite, the global advisory partner for health and life sciences, encompassing connected expertise across Research Partnership, Putnam, Vynamic, and STEM.” Source: RevenueBase Database · checked Sep 8, 2026
19	CT Group	Strong evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	233 contacts →
	Strong evidence “CT Group is a global consultancy that uniquely combines research, intelligence, campaigns and advisory services, to deliver the results our clients need.” Source: RevenueBase Database · checked Sep 8, 2026
20	Thorogood	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	201-500	230 contacts →
	Indirect evidence “Thorogood is an independent consultancy that provides end-to-end data, AI and analytics solutions.” Source: RevenueBase Database · checked Sep 8, 2026
21	Canvas8	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	222 contacts →
	Indirect evidence “We are Canvas8, a global strategic insights practice operating out of London, LA, New York, Singapore and Manila.” Source: RevenueBase Database · checked Sep 8, 2026
22	Quantzig	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	201-500	216 contacts →
	Indirect evidence “Quantzig is at the forefront of partnering with businesses to help them unlock transformative value through analytics solutions.” Source: RevenueBase Database · checked Sep 8, 2026
23	RFI Global	Indirect evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	211 contacts →
	Indirect evidence “RFI Global is the only global data and insights company focusing exclusively on financial services.” Source: RevenueBase Database · checked Sep 8, 2026
24	Centaur Media PLC	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	201-500	200 contacts →
	Partial evidence “Centaur Media is an international provider of business intelligence, learning and specialist consultancy that inspires and enables people to excel at what they do within the…” Source: RevenueBase Database · checked Sep 8, 2026
25	B2B International	Partial evidence	London, United KingdomHQ checked Sep 8, 2026	51-200	178 contacts →
	Partial evidence “The world’s most experienced B2B market research company.” Source: RevenueBase Database · checked Sep 8, 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: business intelligence and research firms. 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 business intelligence and research firms.
Partial evidence: Its own public description names part of business intelligence and research firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business intelligence and research firms. 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 705 business intelligence and research firms based in London, United Kingdom

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Business intelligence and research firms based in London, United Kingdom at a glance

As of Sep 8, 2026

34.6%Verified-email coverage

10.4%Mobile-number coverage

86.6Average contacts per company

1-10Median size (employees)

107.9%Largest-city concentration · London

Sep 8, 2026Page data refreshed

Companies by employee count

1-10

368

11-50

180

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

18,7910–30

1,98431–60

861–90

390–180

340180+

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 business intelligence and research firms, 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 “business intelligence and research firms”. 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 business intelligence and research firms), 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 business intelligence and research firms, 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, 21,126 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 8, 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.

Business intelligence and research firms by metro in the United Kingdom

Business intelligence and research firms in London761
Business intelligence and research firms in Manchester46

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 business intelligence and research firms, 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 business intelligence and research firms are there based in London, United Kingdom?

RevenueBase identified 705 business intelligence and research firms 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?

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

Which city has the most business intelligence and research firms?

London leads with 761 headquartered companies, followed by Manchester (46) and Leeds (23).

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 21,126 verified decision-maker contacts tracked across these 705 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 8, 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.