# Top 30 Technology, Information and Media companies in London
Tamtam tracks 34 Technology, Information and Media companies headquartered in London. This list ranks the 30 largest by number of employees on LinkedIn, led by RELX, Digital Marketing Awards and The Business of Fashion. Their median headcount is 115. Half of them were founded in 2015 or later.
These London-based companies operate in the Technology, Information, and Media sectors. They include large established firms as well as mid-sized companies. The oldest companies listed here are Reach plc, founded in 1832, and Aspermont Limited, founded in 1835.
RELX provides information-based analytics, while Digital Marketing Awards focuses on financial marketing. The Business of Fashion is a global fashion media company, and ESL FACEIT Group - EFG specializes in competitive games and esports.
π¬π§ London Β· 30 companies Β· Updated Nov 15, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [RELX](https://www.tamtam.ai/c/relx) (relx.com)
Global provider of information-based analytics for professionals across industries, helping customers make informed decisions through innovative solutions and technologies | Technology, Information and Media | π¬π§ London | 37,600 | |
| 2 | [Digital Marketing Awards](https://www.tamtam.ai/c/digital-marketing-awards) (cloudlondon.org)
A financial marketing firm helping financial services companies improve their online presence to attract, convert, and retain clients through customized marketing services | Technology, Information and Media | π¬π§ London | 2,246 | |
| 3 | [The Business of Fashion](https://www.tamtam.ai/c/the-business-of-fashion) (businessoffashion.com)
A global fashion media company providing industry insights, resources, events, and online learning for fashion professionals, students, and entrepreneurs worldwide | Technology, Information and Media | π¬π§ London | 1,949 | 2007 |
| 4 | [Reach plc](https://www.tamtam.ai/c/reach-plc) (reachplc.com)
Largest UK and Ireland commercial news publisher connecting audiences through over 120 brands including national, local, and US titles. | Technology, Information and Media | π¬π§ London | 1,756 | 1832 |
| 5 | [ESL FACEIT Group - EFG](https://www.tamtam.ai/c/esl-faceit-group-efg) (eslfaceitgroup.com)
Leading competitive games and esports company helping brands engage youth audiences through authentic activation, creating community beyond gameplay | Technology, Information and Media | π¬π§ London | 1,412 | 2000 |
| 6 | [BMJ](https://www.tamtam.ai/c/bmj) (bmjgroup.com)
Global healthcare knowledge provider improving patient outcomes through evidence, decisions, systems, prioritizing inclusion, diversity, anti-racism, and equity. | Technology, Information and Media | π¬π§ London | 1,281 | 1840 |
| 7 | [Time Out](https://www.tamtam.ai/c/time-out) (timeout.com)
Global brand curating city lifestyle content and operating editorially curated food and cultural markets in multiple international cities. | Technology, Information and Media | π¬π§ London | 735 | 1968 |
| 8 | [Outra](https://www.tamtam.ai/c/outra-london) (outra.co.uk)
A leading data and analytics company using proprietary data and expert modeling to help brands acquire and retain quality customers | Technology, Information and Media | π¬π§ London | 497 | 2018 |
| 9 | [Merzigo](https://www.tamtam.ai/c/merzigo) (merzigo.com)
Cutting-edge video monetization services for broadcasters, producers, and distributors, helping entertainment brands grow AVOD business, reach new audiences, and boost revenue | Technology, Information and Media | π¬π§ London | 383 | 2018 |
| 10 | [DJ Mag](https://www.tamtam.ai/c/dj-mag) (djmag.com)
A top dance music media brand with a wide range of products reaching a global audience of over 72 million monthly | Technology, Information and Media | π¬π§ London | 373 | 1991 |
| 11 | [The Drum](https://www.tamtam.ai/c/the-drum) (thedrum.com)
This company provides content on modern marketing, agency business, creativity, and the future of media to help global marketers make better decisions | Technology, Information and Media | π¬π§ London | 240 | 1985 |
| 12 | [Aspermont Limited](https://www.tamtam.ai/c/aspermont-limited) (aspermont.com)
A leading media services provider specializing in B2B content for global resource industries, offering data and services products to a blue-chip client base | Technology, Information and Media | π¬π§ London | 175 | 1835 |
| 13 | [native](https://www.tamtam.ai/c/native-london) (partner.native.fm)
Campus media specialists connecting brands with students through exclusive partnerships with Studentsβ Unions, offering unique insight into student culture | Technology, Information and Media | π¬π§ London | 169 | 2015 |
| 14 | [Satalia](https://www.tamtam.ai/c/satalia) (satalia.com)
Utilizing cutting-edge technologies, the company builds AI systems to solve complex efficiency challenges for various industries, including route optimization and demand forecasting | Technology, Information and Media | π¬π§ London | 169 | 2008 |
| 15 | [Social Value Portal](https://www.tamtam.ai/c/social-value-portal) (socialvalueportal.com)
Empowers organizations to measure, manage, and report their social contributions, utilizing a robust standard and extensive data to ensure compliance and prevent social washing. | Technology, Information and Media | π¬π§ London | 115 | |
| 16 | [Themis](https://www.tamtam.ai/c/themis) (wearethemis.com)
An award-winning technology platform assisting clients in managing financial crime risk exposure effectively | Technology, Information and Media | π¬π§ London | 106 | 2018 |
| 17 | [Vyntelligence](https://www.tamtam.ai/c/vyntelligence) (vyntelligence.com)
Digital platform using smart data capture and AI insights to transform complex analog work, empowering users to make faster, more informed decisions for improved outcomes | Technology, Information and Media | π¬π§ London | 97 | 2013 |
| 18 | [Brantial TΓΌrkiye](https://www.tamtam.ai/c/brantial-turkiye) (brantial.ai)
A leading provider of packaging solutions, specializing in PET preforms, bottles, closures, extrusion, and thermoforming for various industries domestically and internationally | Technology, Information and Media | π¬π§ London | 77 | |
| 19 | [Hyperlayer](https://www.tamtam.ai/c/hyperlayer) (hyperlayer.com)
Enabling financial institutions with a secure platform and orchestration layer for designing and scaling personalized financial experiences without replacing core systems. | Technology, Information and Media | π¬π§ London | 71 | 2023 |
| 20 | [ADIN.AI](https://www.tamtam.ai/c/adin-ai) (adin.ai)
An AI-based media planning platform for enterprises, leveraging advanced technology for transparent, cross-channel advertising with intelligent targeting and comprehensive analytics | Technology, Information and Media | π¬π§ London | 44 | 2023 |
| 21 | [Direct On Demands](https://www.tamtam.ai/c/direct-on-demands) (directondemands.com)
Global leader in B2B lead generation, offering sales support through results-driven solutions in lead generation, database solutions, and display advertising worldwide | Technology, Information and Media | π¬π§ London | 41 | 2018 |
| 22 | [ROXi](https://www.tamtam.ai/c/roxi) (roxi.tv)
A globally licensed music streaming service offering free music videos, karaoke, music games, and interactive TV platform for broadcasters and content owners | Technology, Information and Media | π¬π§ London | 40 | 2014 |
| 23 | [Piccadilly Circus](https://www.tamtam.ai/c/piccadilly-circus) (msdevs.org)
The QA Engineer Community is a global group of QA engineers who support each other through resources, forums, meetups, and projects | Technology, Information and Media | π¬π§ London | 35 | |
| 24 | [CITF](https://www.tamtam.ai/c/citf) (citf.tech)
A private members network providing technologists with access to events, training, mentoring, coaching, and resources in a sales-free environment | Technology, Information and Media | π¬π§ London | 32 | 1996 |
| 25 | [Luup](https://www.tamtam.ai/c/luup) (luup.com)
A diverse team focused on revolutionizing cross-border payments in eCommerce, providing top-notch solutions, service, and analysis for merchant success | Technology, Information and Media | π¬π§ London | 28 | 2024 |
| 26 | [The49](https://www.tamtam.ai/c/the49) (the49.com)
The49 is an innovative and transformative company that focuses on internet-based projects, working with talented individuals and partnering with impactful initiatives | Technology, Information and Media | π¬π§ London | 24 | 2018 |
| 27 | [Aura Commodities](https://www.tamtam.ai/c/aura-commodities) (auracommodities.com)
Harnessing powerful interface for visualizing worldwide commodity weather risk and data, Aura provides insights for smarter, data-driven decisions on various agricultural commodities | Technology, Information and Media | π¬π§ London | 21 | |
| 28 | [Op2mise.ai](https://www.tamtam.ai/c/op2mise-ai) (op2mise.ai)
Media solutions experts providing best-in-class software solutions to empower clients and drive efficiency, growth, and strategic success through innovative approaches | Technology, Information and Media | π¬π§ London | 14 | 2016 |
| 29 | [The Stack](https://www.tamtam.ai/c/the-stack) (thestack.technology)
A technology publication featuring interviews and insight on digital innovation, policy, and industry changemakers, focusing on IT roles and community support | Technology, Information and Media | π¬π§ London | 14 | 2020 |
| 30 | [Repped](https://www.tamtam.ai/c/repped) (repped.co.uk)
A platform empowering media buyers to initiate sales with reps and vendors, fostering immediate connections for efficient planning and relationship-building | Technology, Information and Media | π¬π§ London | 6 | 2020 |
## 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 London
- [The largest companies in London](https://www.tamtam.ai/l/largest-companies-london) (12,882)
- [Multinational companies in London](https://www.tamtam.ai/l/multinational-companies-london) (3,652)
- [Financial Services companies in London](https://www.tamtam.ai/l/financial-services-companies-london) (1,862)
- [Financial services firms in London](https://www.tamtam.ai/l/financial-services-firms-london) (1,824)
- [SaaS companies in London](https://www.tamtam.ai/l/saas-companies-london) (1,615)
- [Professional services firms in London](https://www.tamtam.ai/l/professional-services-firms-london) (1,248)
- [Software Development companies in London](https://www.tamtam.ai/l/software-development-companies-london) (1,217)
- [Retail chains in London](https://www.tamtam.ai/l/retail-chains-london) (942)
- [IT Services and IT Consulting companies in London](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-london) (693)
- [Companies with a mobile app in London](https://www.tamtam.ai/l/companies-with-mobile-app-london) (667)
- [Consulting firms in London](https://www.tamtam.ai/l/consulting-firms-london) (648)
- [IT services companies in London](https://www.tamtam.ai/l/it-services-companies-london) (607)
- [Subscription businesses in London](https://www.tamtam.ai/l/subscription-businesses-london) (544)
- [Venture capital and private equity firms in London](https://www.tamtam.ai/l/vc-and-private-equity-firms-london) (539)
- [Marketing and communications agencies in London](https://www.tamtam.ai/l/marketing-agencies-london) (533)
- [Retail Apparel and Fashion companies in London](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-london) (498)
- [Advertising Services companies in London](https://www.tamtam.ai/l/advertising-services-companies-london) (480)
- [Companies with in-house R&D in London](https://www.tamtam.ai/l/r-and-d-companies-london) (477)
- [AI companies in London](https://www.tamtam.ai/l/ai-companies-london) (456)
- [Investment Management companies in London](https://www.tamtam.ai/l/investment-management-companies-london) (452)
- [Hotel and hospitality groups in London](https://www.tamtam.ai/l/hospitality-groups-london) (445)
- [Luxury brands in London](https://www.tamtam.ai/l/luxury-brands-london) (428)
- [AI-native companies in London](https://www.tamtam.ai/l/ai-native-companies-london) (407)
- [E-commerce companies in London](https://www.tamtam.ai/l/ecommerce-companies-london) (384)
## The same list elsewhere in United Kingdom
- [Technology, Information and Media companies in the United Kingdom](https://www.tamtam.ai/l/technology-information-and-media-companies-united-kingdom) (55)
## The same list elsewhere
- [Technology, Information and Media companies in the world](https://www.tamtam.ai/l/technology-information-and-media-companies-in-the-world) (432)
- [Technology, Information and Media companies in Europe](https://www.tamtam.ai/l/technology-information-and-media-companies-in-europe) (184)
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Source: https://www.tamtam.ai/l/technology-information-and-media-companies-london