These information services companies in the United Kingdom are predominantly large, established firms based in London. They offer a diverse range of specialized data, analytics, and expert insights to business and institutional clients across various sectors. For example, Clarivate provides trusted intelligence in academia, life sciences, and intellectual property, while Informa connects specialists with academic knowledge and digital services. IHS Markit offers up-to-date financial data, and AlphaSights provides knowledge on-demand to investors and business leaders.
A clear pattern among these companies is their focus on delivering critical information for decision-making and market transparency. Many were founded in the 2000s, such as Informa (1998), AlphaSights (2008), and GlobalData Plc (2010), indicating a period of significant growth in the information services sector. While most are headquartered in London, Wood Mackenzie stands out with its base in Edinburgh, specializing in renewables, energy, and natural resources.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Clarivateclarivate.com
A global information services provider connecting people and organizations to trusted intelligence in Academia & Government, Life Sciences & Healthcare, and Intellectual Property |
11,385 | |||
| 2 |
Informainforma.com
Leading international business in events, digital services, and academic knowledge, connecting specialists worldwide to learn, know, and do more in their fields |
9,410 | |||
| 3 |
IHS Markitspglobal.com
A company providing up-to-date financial data and information through a merger with another organization |
4,522 | |||
| 4 |
AlphaSightsalphasights.com
A global leader in knowledge on-demand connecting investors and business leaders with essential insights for success through round-the-clock coverage |
3,875 | |||
| 5 | 3,022 | ||||
| 6 |
GlobalData Plcglobaldata.com
A leading information services company helps organizations and decision-makers predict the future, make informed decisions, and gain a competitive edge |
2,711 | |||
| 7 |
Wood Mackenziewoodmac.com
Provider of data, analytics, and consultancy services for renewables, energy, and natural resources sectors supporting investment decisions. |
2,472 | |||
| 8 |
Third Bridge Groupthirdbridge.com
A global investment research firm delivering unique insights to help investment firms make better decisions through a team of 1,200+ employees |
2,438 | |||
| 9 |
Dialecticadialectica.io
A B2B information services firm connecting professionals with industry experts worldwide through a trusted knowledge-sharing platform, recognized for growth and workplace excellence |
2,400 | |||
| 10 |
Argus Mediaargusmedia.com
Provides price assessments, news, analytics, consulting, data tools, and conferences for global energy and commodity market transparency and decision-making. |
2,024 | |||
| 11 |
Corsearchcorsearch.com
Revolutionizing brand protection with AI-powered solutions, trademark research, and IP protection services to help companies secure, monitor, and enforce their brands globally |
1,868 | |||
| 12 |
Ascential – Part of the Informa Groupascential.com
organizes and manages experience-driven B2B events, provides industry intelligence and advisory services across multiple key business verticals |
1,670 | |||
| 13 |
Euromoney Institutional Investordelinian.com
Global B2B information-services business providing actionable data, analysis, intelligence, and market participant access across multiple international markets. |
1,487 | |||
| 14 |
Driving Jobsdrivingjobs.co.com
A platform for advertising driving and transport job vacancies, offering various advertising options and integrated with Broadbean for easy job posting |
1,429 | |||
| 15 |
Merit Data & Technology Indiameritdata-tech.com
A company that provides marketing data, product data, customized software, and marketing automation to help B2B brands embrace the challenges of the future |
1,128 | |||
| 16 | 969 | ||||
| 17 | 966 | ||||
| 18 |
Fitch Solutionsfitchsolutions.com
Provides specialized financial data, analytics, and expert insights on credit risk, markets, ESG, and investment strategies worldwide. |
965 | |||
| 19 |
Fastmarketsfastmarkets.com
A leading global provider of price reporting, analytics, and events services for key commodity markets, striving for market transparency and sustainability |
950 | |||
| 20 |
JATO Dynamicsjato.com
provides fast, accurate automotive data and analysis supporting critical decision making for global mobility leaders and market transparency |
783 | |||
| 21 |
Local Shops
A non-profit in Kent generating funds from advertising to support local businesses, events, and charity initiatives within the community |
722 | |||
| 22 | 713 | ||||
| 23 |
Oxford Economicsoxfordeconomics.com
Provide economic analysis, forecasts, data, and advisory services to corporations, governments, and financial institutions worldwide for informed decision-making. |
686 | |||
| 24 |
Markitspglobal.com
A global financial information and services provider focusing on independent data, trade processing, technology platforms, and managed services for institutional clients |
666 | |||
| 25 |
FGE NexantECAfgenexanteca.com
provides independent research, analysis, consultation, and advisory services with unique insights and strong relationships in oil and gas markets worldwide |
665 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 26 |
B2B Marketingb2bmarketing.net
Professional community for B2B marketers to share knowledge, access training, events, industry news, and best practice advice online. |
634 | |||
| 27 |
Informa Connectinformaconnect.com
A global leader in producing live events and digital communities, specializing in finance, life sciences, and technology to help professionals grow and connect |
612 | |||
| 28 |
Informa Techinformatech.com
Leading provider of market insights and access to the global business technology community, helping professionals make better technology decisions and enabling marketers to reach tech buyers |
594 | |||
| 29 |
NIQ Brandbankniq.com
A global provider of digital product content for brands, retailers, and wholesalers, ensuring high-quality content meets industry standards and enriches the consumer shopping experience |
578 | |||
| 30 | 565 | ||||
| 31 |
proSapientprosapient.com
A global firm offering fast, accurate primary research and expert networking services to institutional investors, consultants, and corporate clients worldwide Powered by AI technology |
533 | |||
| 32 |
GlobalData Healthcareglobaldata.com
GlobalData provides actionable insight and consulting solutions for the pharmaceutical and medical device sectors, helping businesses achieve growth and increase value |
524 | |||
| 33 |
Wolters Kluwer UKwolterskluwer.com
It provides information services and solutions for professionals in business, tax, and accounting, ensuring informed decision-making through technology and expertise. |
478 | |||
| 34 |
Restore Information Managementrestore.co.uk
Specializes in secure physical document storage, digital transformation, and data management to help businesses protect and access information efficiently. |
475 | |||
| 35 |
UK Visa Jobsukvisajobs.com
Job search platform catering to students, graduates, and professionals needing visa sponsorship or work permit to work in the UK |
475 | |||
| 36 |
Autovistaautovistagroup.com
This company provides pricing and specification intelligence for European automotive decision-makers by analyzing complex data to simplify decision-making throughout a vehicle's lifecycle |
474 | |||
| 37 |
Careers Walescareerswales.gov.wales
A Welsh Government-funded organization providing free careers information and support for individuals, as well as offering services for employers and educational partnerships |
466 | |||
| 38 |
CONTEXTcontextworld.com
A global company providing forecasts, analytics, and data-management solutions for major technology companies, tracking over $200 billion in sales annually Operating worldwide |
455 | |||
| 39 |
ISI Marketsisimarkets.com
Provides comprehensive, authoritative financial data and market intelligence, leveraging advanced analytics to support investment, strategic, and risk decisions in emerging markets. |
449 | |||
| 40 |
Law Business Researchcentellic.com
Transforms client decision-making on strategy, growth, and risk through indispensable data, intelligence, and analysis, leveraging combined strengths in data, insight, and market access. |
439 | |||
| 41 |
Bailie Groupbailiegroup.co.uk
A family-owned group of agencies and consultancies focused on improving lives through knowledge sharing, innovative projects, and strategic investments |
390 | |||
| 42 |
Interfaxinterfax.com
A leading provider of accurate and timely business, financial, and political news, along with professional IT solutions for risk management and compliance |
387 | |||
| 43 |
Energy Aspectsbit.ly
Provides real-time market insights and data solutions to support decision-making in energy and financial sectors worldwide. |
374 | |||
| 44 |
FT Locationsftlocations.com
World leader in web-based GIS for economic development, providing data-driven products and services to government, businesses, investors, and community organizations across North America |
370 | |||
| 45 |
Software Developmentartbees.co.uk
A team of software engineers collaborating to create innovative digital products with a focus on improving the world |
362 | |||
| 46 |
AMIamiplastics.com
Provider of market intelligence, data, conferences, and digital content for the global plastics industry to support informed business decisions. |
350 | |||
| 47 |
Bureau van Dijk - A Moody's Companymoodys.com
The company captures and processes data on millions of companies worldwide, providing insights for decision-making by comparing companies, financial data, and corporate structures |
302 | |||
| 48 |
Croner-icroneri.co.uk
Provider of expert knowledge and technology solutions for business professionals in tax, accounting, HR, health, safety, and education sectors. |
291 | |||
| 49 |
Arbolusarbolus.com
This company develops technology to digitize offline human knowledge, making it accessible through machine learning and natural language processing for businesses |
273 | |||
| 50 |
Redkiteredkite.com
Redkite, now part of Accenture, helps organizations harness the power of data to improve decision-making, customer experiences, and operational efficiency |
236 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 15, 2026.
More company lists in the United Kingdom
- The largest companies in the United Kingdom 36,548
- Multinational companies in the United Kingdom 7,458
- Financial services firms in the United Kingdom 3,711
- Financial Services companies in the United Kingdom 3,696
- Retail chains in the United Kingdom 3,289
- Professional services firms in the United Kingdom 2,706
- Software Development companies in the United Kingdom 2,600
- Manufacturers in the United Kingdom 2,159
- Companies with in-house R&D in the United Kingdom 1,930
- IT Services and IT Consulting companies in the United Kingdom 1,722
- Retail companies in the United Kingdom 1,596
- IT services companies in the United Kingdom 1,583
- Hotel and hospitality groups in the United Kingdom 1,461
- Companies with a mobile app in the United Kingdom 1,411
- Consulting firms in the United Kingdom 1,298
- E-commerce companies in the United Kingdom 1,246
- Hardware manufacturers in the United Kingdom 1,239
- Family-owned companies in the United Kingdom 1,224
- Hospitality companies in the United Kingdom 1,204
- Critical infrastructure operators in the United Kingdom 1,195
- Wellness and Fitness Services companies in the United Kingdom 1,151
- Retail Apparel and Fashion companies in the United Kingdom 1,085
- Subscription businesses in the United Kingdom 1,077
- Distributors and wholesalers in the United Kingdom 1,061