# Top 100 marketing and communications agencies in Europe

Tamtam tracks 4,190 marketing and communications agencies headquartered in Europe. This list ranks the 100 largest by number of employees on LinkedIn, led by Publicis Groupe, Bertelsmann SE & Co. KGaA and Clinic. Their median headcount is 3,343. Half of them were founded in 2003 or later. The most common headquarters are London (51), Paris (8) and Barcelona (3).

This selection of large European companies primarily focuses on advertising services and broader media production. Many are headquartered in London, forming a notable cluster for the sector. Publicis Groupe, with 41,020 employees, helps clients transform their marketing and digital businesses. Bertelsmann SE & Co. KGaA is a global media, services, and education company, while Clinic crafts bold ideas to drive action. EssenceMediacom delivers marketing breakthroughs, and Havas provides integrated, data-driven communication solutions. Keywords Studios offers creative services for the global video games industry.

The companies listed are generally large groups, with several exceeding 10,000 employees. The recurring theme is the provision of strategic and creative services aimed at enhancing brand presence and market engagement for diverse clients. While advertising dominates, there are also significant players in media production, retail, computer games, and design services, indicating a diverse but interconnected landscape of communication-focused enterprises.

🌍 Europe · 100 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Publicis Groupe](https://www.tamtam.ai/c/publicis-groupe) (publicisgroupe.com)<br>Helps clients transform their marketing and digital businesses, providing expertise in communications, media, data, and technology across 100+ countries. | Advertising Services | 🇫🇷 Paris | 41,020 |  |
| 2 | [Bertelsmann SE & Co. KGaA](https://www.tamtam.ai/c/bertelsmann-se-and-co-kgaa) (wonderl.ink)<br>A global media, services, and education company with diverse subsidiaries, generating billions in revenue and striving for climate neutrality by 2030 | Media Production | 🇩🇪 Gütersloh | 20,799 |  |
| 3 | [Clinic](https://www.tamtam.ai/c/clinic) (clinic.co.uk)<br>Independent creative agency crafting bold ideas to drive action and change, with a focus on people's experiences and problem-solving for brands | Advertising Services | 🇬🇧 London | 19,192 | 1983 |
| 4 | [Smollan](https://www.tamtam.ai/c/smollan) (smollan.com)<br>Partners with brands and retailers, building solutions that drive growth and create opportunities at the point of purchase. | Retail | 🇬🇧 London | 13,502 | 1931 |
| 5 | [EssenceMediacom](https://www.tamtam.ai/c/essencemediacom) (essencemediacom.com)<br>EssenceMediacom is a leading agency focused on delivering marketing breakthroughs for brands through integrated media solutions and continuous learning | Advertising Services | 🇬🇧 London | 12,000 | 2023 |
| 6 | [Keywords Studios](https://www.tamtam.ai/c/keywords-studios) (keywordsstudios.com)<br>A leading creative services provider for the global video games industry, offering end-to-end solutions and support across all aspects of game development | Computer Games | 🇮🇪 Dublin | 11,828 | 1998 |
| 7 | [Publicis Media](https://www.tamtam.ai/c/publicis-media) (publicisgroupe.com)<br>A global media company within Publicis Groupe, employing data-driven solutions and platform-based technologies to deliver client value and drive growth internationally | Advertising Services | 🇬🇧 London | 11,033 |  |
| 8 | [Havas](https://www.tamtam.ai/c/havas) (havas.com)<br>Global communications network providing integrated, data-driven, AI-powered marketing and communication solutions through collaborative, innovative teams worldwide. | Advertising Services | 🇫🇷 Puteaux | 11,029 |  |
| 9 | [Social Group - socialgroup.ch](https://www.tamtam.ai/c/social-group-socialgroup-ch) (socialgroup.ch)<br>Optimizing digital business ecosystems, enhancing LinkedIn presence for sustainable growth, measurable success, and maximum efficiency in sales and recruiting. | Business Consulting and Services | 🇨🇭 Wallisellen | 10,803 | 2012 |
| 10 | [Brand Management Agency](https://www.tamtam.ai/c/brand-management-agency) (brandinglo.com)<br>Empowering businesses to unlock their brand's potential through brand management, asset management, marketing services, and expert guidance for growth and success | Design Services | 🇬🇧 London | 9,080 |  |
| 11 | [HH Global](https://www.tamtam.ai/c/hh-global) (hhglobal.com)<br>Global leader in tech-enabled creative production and procurement, partnering with clients and suppliers worldwide to deliver impactful creative solutions. | Advertising Services | 🇬🇧 London | 8,626 |  |
| 12 | [DNEG](https://www.tamtam.ai/c/dneg-fitzrovia) (dneg.com)<br>A global visual entertainment services company acclaimed for its award-winning visual effects work in feature films, television, and multiplatform content | Animation and Post-production | 🇬🇧 Fitzrovia | 8,179 | 1998 |
| 13 | [ZZP/Zelfstandig Ondernemer](https://www.tamtam.ai/c/zzp-zelfstandig-ondernemer) (zelotes.nl)<br>This company specializes in developing branding, websites, SEO, and internet marketing services for self-employed entrepreneurs and freelancers | Design Services | 🇳🇱 Dokkum | 7,617 |  |
| 14 | [Wavemaker](https://www.tamtam.ai/c/wavemaker) (wavemakerglobal.com)<br>Wavemaker specializes in Provocative Planning to drive growth by combining machine learning and human intelligence for better outcomes and consumer experiences #GrowFearless #PositiveProvocation | Advertising Services | 🇬🇧 London | 7,200 |  |
| 15 | [Mindshare](https://www.tamtam.ai/c/mindshare) (mindshareworld.com)<br>A media services company that accelerates enduring and sustainable business growth for clients through data and behavioral science, connecting brands with consumers | Advertising Services | 🇬🇧 London | 6,729 |  |
| 16 | [Bauer Media Group](https://www.tamtam.ai/c/bauer-media-group) (bauermedia.com)<br>Media business creating content for millions across Europe, covering print and online publishing, audio broadcasting, entertainment, and out-of-home advertising. | Media Production | 🇩🇪 Hamburg | 6,562 | 1875 |
| 17 | [MERCADO](https://www.tamtam.ai/c/mercado-3118461) (agenciamercado.com)<br>Creative agency specializing in relationship marketing strategies, digital tools, and metrics to help brand owners achieve key objectives | Advertising Services | 🇵🇹 Lisbon | 6,557 | 2013 |
| 18 | [Toptal](https://www.tamtam.ai/c/toptal) (toptal.com)<br>A network connecting top talent in business, design, and technology to help companies scale teams on demand with impressive growth | Software Development | 🇬🇧 Work from Anywhere | 6,417 | 2010 |
| 19 | [FinTech Foundry](https://www.tamtam.ai/c/fintech-foundry) (financemarketing.org)<br>The company specializes in making finance more approachable through business consultation, brand strategy, and digital marketing services for financial services companies | Software Development | 🇬🇧 London | 5,914 |  |
| 20 | [Salesland](https://www.tamtam.ai/c/salesland) (salesland.net)<br>A global sales specialist recruiting, training, and leading commercial teams across 13 countries, focusing on direct and indirect selling, marketing, and advertising | Advertising Services | 🇪🇸 Madrid | 5,854 | 2000 |
| 21 | [BOUTIQUE](https://www.tamtam.ai/c/boutique-leeds) (weareboutique.co.uk)<br>A fiercely independent agency focused on delivering ambitious media, digital, PR, and social solutions for clients driven by growth and results | Advertising Services | 🇬🇧 Leeds | 5,825 | 2012 |
| 22 | [Libre](https://www.tamtam.ai/c/libre-torino) (libre.digital)<br>Italian digital creative network crafting apps, web-apps, websites, and portals collaboratively since 2003 | IT Services and IT Consulting | 🇮🇹 Turin | 5,712 | 2007 |
| 23 | [iO](https://www.tamtam.ai/c/io) (iodigital.com)<br>iO is a blended agency offering expertise in strategy, creativity, marketing, technology, and data to create relevant brand experiences for clients across industries and countries | Technology, Information and Internet | 🇧🇪 Herentals | 5,704 | 2005 |
| 24 | [PHD](https://www.tamtam.ai/c/phd) (phdmedia.com)<br>Global media agency network combining data, technology, and human expertise to create innovative campaigns and transform brand experiences worldwide. | Advertising Services | 🇬🇧 Bankside | 5,700 | 1990 |
| 25 | [Shopify Developer](https://www.tamtam.ai/c/shopify-developer) (onder.co.uk)<br>A cloud-based e-commerce platform offering easy setup for online stores and expert development services to enhance advanced features and customer experiences | Software Development | 🇬🇧 London | 5,461 |  |
| 26 | [IMG](https://www.tamtam.ai/c/img) (img.com)<br>A global sports & culture company that partners with organizations to maximize the value of their assets, brands, and fanbase | Entertainment Providers | 🇬🇧 London | 5,409 | 1960 |
| 27 | [Zenith](https://www.tamtam.ai/c/zenith) (zenithmedia.com)<br>A global agency specializing in media, data, technology, commerce, and content to drive successful business outcomes for clients worldwide | Advertising Services | 🇬🇧 London | 5,382 |  |
| 28 | [Monks](https://www.tamtam.ai/c/monks) (monks.com)<br>Provides global marketing, technology services, AI-driven data science, and content production to help brands accelerate business and outpace competition. | Advertising Services | 🇬🇧 London | 5,067 | 2001 |
| 29 | [Fashion](https://www.tamtam.ai/c/fashion) (growth.me.uk)<br>Creative collective offering design, patternmaking, sampling, production, styling, photography, and marketing services for fashion brands and designers. | Retail Apparel and Fashion | 🇬🇧 London | 4,979 | 2017 |
| 30 | [FIRMA](https://www.tamtam.ai/c/firma) (wearefirma.com)<br>A full-service Branding and Innovation agency creating successful brands by combining actionable insights, strategic thinking, and creative imagination | Advertising Services | 🇪🇸 Barcelona | 4,889 | 2006 |
| 31 | [Saatchi & Saatchi](https://www.tamtam.ai/c/saatchi-and-saatchi) (saatchi.com)<br>Global communications and advertising network creating impactful creative ideas that build strong emotional connections between consumers and brands worldwide. | Advertising Services | 🇬🇧 London | 4,737 | 1970 |
| 32 | [DEPT®](https://www.tamtam.ai/c/dept) (dept.global)<br>A pioneering technology and marketing services company creating global digital experiences for top brands, committed to sustainability and innovation | Advertising Services | 🇳🇱 Amsterdam | 4,701 |  |
| 33 | [MediaCom](https://www.tamtam.ai/c/mediacom-london) (essencemediacom.com)<br>An innovative marketing agency within EssenceMediacom GroupM, specializing in creating breakthroughs for brands Follow @EssenceMediacom for more | Advertising Services | 🇬🇧 London | 4,671 |  |
| 34 | [MEC](https://www.tamtam.ai/c/mec-london) (mecglobal.com)<br>It is a global media agency formed by MEC and Maxus, focusing on innovative marketing and advertising solutions for clients. | Advertising Services | 🇬🇧 London | 4,489 | 2002 |
| 35 | [MNC](https://www.tamtam.ai/c/mnc) (mnc.co.uk)<br>This media agency goes beyond media by combining creative solutions with tailored strategies to help startups scale and established brands maintain market leadership | Advertising Services | 🇬🇧 London | 4,218 | 1997 |
| 36 | [CPM International](https://www.tamtam.ai/c/cpm-international) (cpm-int.com)<br>International agency providing sales outsourcing, customer experience, merchandising, sampling, and data-driven solutions across multiple sectors and markets. | Outsourcing and Offshoring Consulting | 🇬🇧 Thame | 4,184 | 1936 |
| 37 | [Simulation AI](https://www.tamtam.ai/c/simulation-ai) (marketizon.com)<br>Aviation Marketing is a specialized agency offering strategic marketing solutions to help aviation companies achieve their business goals through digital marketing strategies | Software Development | 🇬🇧 London | 4,007 |  |
| 38 | [Egmont](https://www.tamtam.ai/c/egmont) (egmont.com)<br>A leading Nordic media group bringing stories to life through TV, movies, games, books, magazines, while empowering children and youth in need | Media Production | 🇩🇰 Copenhagen | 3,996 |  |
| 39 | [Alpha](https://www.tamtam.ai/c/alpha) (alphacrc.com)<br>Multilingual content solutions provider delivering transcreation, software localization, audiovisual services, and AI-based translation across digital, games, fashion, automotive, financial, and medical sectors. | Translation and Localization | 🇬🇧 Cambridge | 3,977 | 1987 |
| 40 | [Ströer SE & Co. KGaA](https://www.tamtam.ai/c/stroer-se-and-co-kgaa) (stroeer.de)<br>Leading German media house, offering outdoor advertising, digital media, dialog marketing, e-commerce, and Data as a Service solutions, reaching millions of users. | Advertising Services | 🇩🇪 Cologne | 3,924 | 1990 |
| 41 | [Criteo](https://www.tamtam.ai/c/criteo) (bit.ly)<br>Provides a global commerce intelligence platform that drives performance for brands, agencies, retailers, and publishers using proprietary data and AI innovation. | Advertising Services | 🇫🇷 Paris | 3,918 |  |
| 42 | [GP](https://www.tamtam.ai/c/gp) (media7.net)<br>Specializing in medical website design, our agency creates engaging healthcare websites with comprehensive marketing solutions to assist healthcare providers and medical device companies in succeeding | Design Services | 🇬🇧 London | 3,873 |  |
| 43 | [OLIVER \| The Brandtech Group](https://www.tamtam.ai/c/oliver-the-brandtech-group) (oliverinside.ai)<br>Design and operate bespoke in-house agencies and ecosystems for brands, driving business growth and innovative marketing solutions globally. | Advertising Services | 🇬🇧 London | 3,870 | 2009 |
| 44 | [JAKALA](https://www.tamtam.ai/c/jakala) (jakala.com)<br>Data and AI company delivering measurable marketing results through data-inspired activations, integrated solutions, and global client collaboration. | Business Consulting and Services | 🇮🇹 Milan | 3,860 |  |
| 45 | [Enterprise AI](https://www.tamtam.ai/c/enterprise-ai) (thehealthmarketing.com)<br>Provides high-quality medical services in the comfort of clients' homes, tailored for recovery, chronic conditions, and daily assistance, offering affordability and convenience | IT Services and IT Consulting | 🇬🇧 London | 3,629 |  |
| 46 | [Salon Marketing](https://www.tamtam.ai/c/salon-marketing) (marketinglo.com)<br>Salon Marketing specializes in helping hair and beauty businesses generate leads, increase bookings, and boost revenue through strategic branding and marketing services | Personal Care Services | 🇬🇧 London | 3,558 |  |
| 47 | [WPP Production](https://www.tamtam.ai/c/wpp-production) (wppproduction.com)<br>Global content production company integrating creative producers, AI, and virtual production to deliver innovative, fast, and scalable marketing content solutions. | Advertising Services | 🇬🇧 London | 3,507 |  |
| 48 | [MPC](https://www.tamtam.ai/c/mpc) (mpcvfx.com)<br>Teams in Paris and Liège create digital visual effects and manage post-production for feature films and TV series. Since April 2025, part of TransPerfect. | Entertainment Providers | 🇫🇷 Paris | 3,389 |  |
| 49 | [MSL (Global)](https://www.tamtam.ai/c/msl-global) (mslgroup.com)<br>Global PR firm with 50 years of experience, 2000+ employees in 100+ cities worldwide Specializes in building brand influence and impactful storytelling | Public Relations and Communications Services | 🇫🇷 Paris | 3,377 | 2009 |
| 50 | [Framestore](https://www.tamtam.ai/c/framestore) (lnk.bio)<br>A global company combining talent and technology to create pixel-perfect images for blockbuster films, TV, advertising, and immersive experiences | Animation and Post-production | 🇬🇧 London | 3,343 | 1986 |
| 51 | [Hogarth](https://www.tamtam.ai/c/hogarth) (wppproduction.com)<br>Creative production company combining craft, insight, and technology to bring creative work to life across global locations. | Advertising Services | 🇬🇧 London | 3,262 | 2008 |
| 52 | [e-Commerce](https://www.tamtam.ai/c/e-commerce) (media7.net)<br>This company specializes in eCommerce services, creating online shopping platforms that are secure, user-friendly, and designed to convert shoppers into customers | Technology, Information and Internet | 🇬🇧 London | 3,208 | 2007 |
| 53 | [JK - Agency](https://www.tamtam.ai/c/jk-agency) (jkgroupe.com)<br>Strategic communication & engagement firm specializing in designing social experiences to create innovative ideas and build impactful projects | Advertising Services | 🇫🇷 Paris | 3,135 | 2012 |
| 54 | [Tag](https://www.tamtam.ai/c/tag-london) (tagworldwide.com)<br>Marketing agency specializing in high-impact content creation for leading brands, utilizing technology-driven solutions for efficient, effective, and sustainable campaigns worldwide | Media Production | 🇬🇧 London | 3,090 | 1972 |
| 55 | [Mother](https://www.tamtam.ai/c/mother) (motherfamily.com)<br>A globally respected, independent creative agency with offices worldwide, specializing in creating culturally impactful ideas for a diverse range of clients | Advertising Services | 🇬🇧 London | 3,065 | 1996 |
| 56 | [Automotive Market](https://www.tamtam.ai/c/automotive-market)<br>The company offers comprehensive social media marketing services, including strategy, content creation, campaign management, and data analysis to help businesses thrive online | Architecture and Planning | 🇬🇧 London | 3,000 |  |
| 57 | [Solocal](https://www.tamtam.ai/c/solocal-boulogne-billancourt) (solocal.com)<br>Providing digital solutions to businesses in France through Search Local and Digital Marketing services, focusing on local content, personalized marketing, and growth acceleration | Advertising Services | 🇫🇷 Boulogne-Billancourt | 2,935 |  |
| 58 | [Two Circles](https://www.tamtam.ai/c/two-circles) (twocircles.com)<br>Management of extensive fan data to enhance audience engagement and increase revenue for leading sports and entertainment organizations worldwide. | Marketing Services | 🇬🇧 London | 2,877 |  |
| 59 | [SQLI](https://www.tamtam.ai/c/sqli) (sqli.com)<br>Leading European group for customer experience and digital transformation services. Empowering international brands with digital innovation, combining technology, methodologies, and AI for business growth. | IT Services and IT Consulting | 🇫🇷 Levallois-Perret | 2,854 | 1990 |
| 60 | [Italiaonline](https://www.tamtam.ai/c/italiaonline) (italiaonline.it)<br>Italy's largest internet company offers digital solutions, directories, marketing services, and VAS to a wide range of clients, connecting millions of users with businesses | Advertising Services | 🇮🇹 Assago | 2,719 | 2013 |
| 61 | [Advantage Smollan](https://www.tamtam.ai/c/advantage-smollan) (advantagesmollan.com)<br>Local experts providing consistent service and strong client relationships, leveraging global insights, innovation, and technology for growth. | Advertising Services | 🇬🇧 Winnersh | 2,706 |  |
| 62 | [SwissMarketLab](https://www.tamtam.ai/c/swissmarketlab) (swissmarketlab.com)<br>Innovative Swiss-based agency specializing in tailored digital marketing solutions, web design, and ad management on platforms like Meta, Google Ads, TikTok, and Linkedin | Marketing Services | 🇨🇭 London | 2,690 | 2021 |
| 63 | [Estado Activo](https://www.tamtam.ai/c/estado-activo) (estadoactivo.com)<br>An interactive production company specializing in internet services for online branding, marketing, advertising, and e-commerce Services include SEO/SEM, web development, and mobile apps | Technology, Information and Internet | 🇪🇸 Barcelona | 2,680 | 2009 |
| 64 | [Ospedale](https://www.tamtam.ai/c/ospedale) (comunicazionesanitaria.org)<br>Specialized in healthcare marketing and communication, providing services like website development, social media management, press releases, educational content, and graphic design | Online Audio and Video Media | 🇮🇹 Bari | 2,608 | 2001 |
| 65 | [MCI](https://www.tamtam.ai/c/mci) (wearemci.com)<br>Global agency specializing in engagement and marketing through live & virtual events, strategic communications, and community solutions to drive innovation and growth | Advertising Services | 🇨🇭 Geneva | 2,585 | 1987 |
| 66 | [Artefact](https://www.tamtam.ai/c/artefact) (artefact.com)<br>Consulting company focused on data and AI adoption, specializing in data transformation and marketing to drive business results across the value chain for global brands. | Business Consulting and Services | 🇫🇷 Paris | 2,572 | 2014 |
| 67 | [Paragon](https://www.tamtam.ai/c/paragon-london) (paragon.world)<br>A leading provider of business services offering technology-driven solutions to improve client performance, increase efficiency, and adapt to market demands | Business Consulting and Services | 🇬🇧 London | 2,530 |  |
| 68 | [Video AI](https://www.tamtam.ai/c/video-ai) (marketinglo.com)<br>This company specializes in creating engaging, converting, and thought-provoking video marketing campaigns to empower brands, organizations, and agencies globally | Online Audio and Video Media | 🇬🇧 London | 2,509 |  |
| 69 | [EVENT ORGANIZERS](https://www.tamtam.ai/c/event-organizers) (eventorganizers.com)<br>Event Organizers LLC specializes in planning, designing, producing, and managing memorable events for cultural, corporate, and technology clients worldwide | Events Services | 🇸🇪 San Francisco \| Stockholm | 2,505 |  |
| 70 | [Related](https://www.tamtam.ai/c/related) (related.dk)<br>Nordic PR, communications, and marketing agency specializing in tech and travel industries Represents international clients for strategic, tactical, and operational communications services | Public Relations and Communications Services | 🇩🇰 Aarhus | 2,500 | 2003 |
| 71 | [K Particulier](https://www.tamtam.ai/c/k-particulier) (k-particulier.fr)<br>Specialized Health Communication Agency focused on Medical Education, producing high-value content for healthcare professionals in areas such as professional obligations, doctor-patient communication, and digital platforms | Advertising Services | 🇫🇷 Boulogne-Billancourt | 2,462 | 1996 |
| 72 | [Customer Service](https://www.tamtam.ai/c/customer-service-paris) (customerservice.inc)<br>The company specializes in creating advertising content that captures people's interests, following Howard Gossage's belief from 1950 | Advertising Services | 🇫🇷 Paris | 2,381 | 2022 |
| 73 | [Carat](https://www.tamtam.ai/c/carat) (carat.com)<br>It is a leading media agency that connects brands with people through innovative media experiences, leveraging technology and human understanding. | Advertising Services | 🇬🇧 London | 2,373 |  |
| 74 | [Iris London](https://www.tamtam.ai/c/iris-london) (iris-worldwide.com)<br>The Participation Agency helps brands grow using creativity, data-driven media, and people to create cultural moments and connect with audiences worldwide | Advertising Services | 🇬🇧 London | 2,365 | 1999 |
| 75 | [iProspect](https://www.tamtam.ai/c/iprospect) (iprospect.com)<br>Global digital-first media agency specializing in media strategy, digital expertise, and audience knowledge to drive performance-driven brand building for iconic brands worldwide | Advertising Services | 🇬🇧 London | 2,325 | 1996 |
| 76 | [Social Media](https://www.tamtam.ai/c/social-media) (social-media.co.uk)<br>Results-driven online marketing agency specializing in SEO, SMM, PPC, and BRM solutions for clients in various industries Focus on monitoring, maximizing effectiveness, and brand image | Advertising Services | 🇬🇧 London | 2,319 | 2007 |
| 77 | [Performance Marketing](https://www.tamtam.ai/c/performance-marketing) (marketinglo.com)<br>A global digital marketing agency specializing in data-driven campaigns to grow ambitious brands through technology, media, content, and performance optimization strategies | Marketing Services | 🇬🇧 London | 2,318 |  |
| 78 | [Wellness Marketing Agency](https://www.tamtam.ai/c/wellness-marketing-agency) (remolia.com)<br>This wellness marketing agency helps businesses build trust and credibility, strategize marketing campaigns, and launch ground-breaking products for wellness brands | Wellness and Fitness Services | 🇬🇧 London | 2,314 |  |
| 79 | [EY Studio+](https://www.tamtam.ai/c/ey-studio) (ey.com)<br>Global team combining design, technology, and commercial insight to enhance customer experience and drive business transformation across industries. | Professional Services | 🇬🇧 London | 2,270 | 2025 |
| 80 | [Jellyfish](https://www.tamtam.ai/c/jellyfish-london) (jellyfish.com)<br>A marketing performance company specializing in navigating and connecting platforms to drive growth for global brands through tech, media, creativity, and data expertise | Advertising Services | 🇬🇧 London | 2,259 | 2005 |
| 81 | [SEO](https://www.tamtam.ai/c/seo-samobor) (seo.hr)<br>An SEO agency in Croatia offering services such as search engine optimization, search engine marketing, social media marketing, and web development for top search engine results | Technology, Information and Internet | 🇭🇷 Samobor | 2,259 | 2006 |
| 82 | [Photography](https://www.tamtam.ai/c/photography) (media7.net)<br>This company specializes in professional photography services, including product, site, property, event, wedding, modelling, and lifestyle photography with expert editing and digital enhancement | Photography | 🇬🇧 London | 2,205 | 2009 |
| 83 | [Self-employment](https://www.tamtam.ai/c/self-employment-london) (linkedin.com)<br>Helps startups and small businesses with branding, e-commerce websites, and website development, following a process of learning, planning, designing, building, and launching. | Technology, Information and Internet | 🇬🇧 London | 2,200 |  |
| 84 | [Pénélope Groupe](https://www.tamtam.ai/c/penelope-groupe) (hospitality-penelope.fr)<br>Provides corporate visitor reception, telephony, commercial animation, marketing studies, event management, temporary work, and administrative services for businesses. | Business Consulting and Services | 🇫🇷 Paris | 2,127 | 1971 |
| 85 | [Marketizon](https://www.tamtam.ai/c/marketizon) (marketizon.com)<br>Innovative multi-channel marketing technologies leader dedicated to creating effective campaigns, transforming users into followers, and achieving business goals through digital marketing strategies | Advertising Services | 🇬🇧 London | 2,123 |  |
| 86 | [Self empoyed](https://www.tamtam.ai/c/self-empoyed) (uk.linkedin.com)<br>A company that operates on a self-employed basis, providing services or products independently without being affiliated with any specific organization | Retail Art Supplies | 🇬🇧 London | 2,108 |  |
| 87 | [Bright Network](https://www.tamtam.ai/c/bright-network) (employers.brightnetwork.co.uk)<br>Connects top companies with bright graduates using data and technology to offer career opportunities and fulfill business talent needs. | Staffing and Recruiting | 🇬🇧 London | 2,100 | 2013 |
| 88 | [Cuba](https://www.tamtam.ai/c/cuba) (cuba-london.co.uk)<br>Integrated marketing agency specializing in creating campaigns based on insights to drive sales for clients through advertising, direct, digital, film, branding, and repro services | Advertising Services | 🇬🇧 London | 2,073 | 2000 |
| 89 | [GRUP MEDIAPRO](https://www.tamtam.ai/c/grup-mediapro) (mediapro.tv)<br>A leading European group in the audiovisual sector, specializing in content integration, production, distribution, smart cities planning, interactive museum spaces, and marketing content planning | Media Production | 🇪🇸 Barcelona | 2,065 | 1994 |
| 90 | [Young Professionals](https://www.tamtam.ai/c/young-professionals) (young-professionals.uk)<br>This company connects schools and colleges with companies to help place school leavers into apprenticeships and work experience programs with top brands | Advertising Services | 🇬🇧 Derby | 2,029 | 2015 |
| 91 | [Newsquest Media Group](https://www.tamtam.ai/c/newsquest-media-group) (newsquest.co.uk)<br>A regional media company in the UK, part of Gannett Inc, with a focus on local news, digital advertising, and marketing solutions | Newspaper Publishing | 🇬🇧 Newport | 1,984 |  |
| 92 | [+ Vendas](https://www.tamtam.ai/c/vendas) (maisvendas.pt)<br>A +Vendas offers professional solutions for critical business areas, specializing in sales impact through commercial and marketing, HR training, organizational management, and investment projects | Business Consulting and Services | 🇵🇹 Leiria | 1,975 | 2019 |
| 93 | [MiQ](https://www.tamtam.ai/c/miq) (wearemiq.com)<br>Programmatic media partnership leveraging agnostic buying platforms, audience intelligence, and TV data to deliver high-performance advertising campaigns for various brands and agencies. | Advertising Services | 🇬🇧 London | 1,965 | 2010 |
| 94 | [Omnicom Media UK](https://www.tamtam.ai/c/omnicom-media-uk) (omnicommediagroup.com)<br>Connects diverse media agencies using a marketing orchestration system to provide relevant consumer experiences and inclusive environments through award winning strategic planning. | Advertising Services | 🇬🇧 London | 1,963 |  |
| 95 | [Image AI](https://www.tamtam.ai/c/image-ai) (thehealthmarketing.com)<br>Revolutionizing image interaction with AI solutions for accessibility, usability, and enjoyment Offering image classification, generation, search, analysis services for various industries | Software Development | 🇬🇧 London | 1,950 |  |
| 96 | [Hi-tech](https://www.tamtam.ai/c/hi-tech-zagreb) (hi-tech.hr)<br>Digital agency specializing in internet and mobile advertising, creating campaigns and projects for domestic and international clients with a passionate and dynamic team | Advertising Services | 🇭🇷 Zagreb | 1,935 |  |
| 97 | [We Are Social](https://www.tamtam.ai/c/we-are-social) (wearesocial.com)<br>A global creative agency specializing in social media, crafting ideas that resonate with online communities to reach targeted audiences effectively | Advertising Services | 🇬🇧 London | 1,926 | 2008 |
| 98 | [OMA](https://www.tamtam.ai/c/oma) (oma.com)<br>International architecture practice with a research and design studio, led by eight partners, known for innovative buildings worldwide, with offices in multiple cities | Architecture and Planning | 🇳🇱 Rotterdam | 1,905 | 1975 |
| 99 | [Facebook Advertising](https://www.tamtam.ai/c/facebook-advertising)<br>The company specializes in Facebook and LinkedIn marketing campaigns, social media solutions, application development, and consulting for businesses | Advertising Services | 🇭🇺 Budapest | 1,905 |  |
| 100 | [ALTAVIA](https://www.tamtam.ai/c/altavia) (altavia-group.com)<br>Global network providing Retail Marketing Services with solutions for retail brands worldwide Specializing in Commercial Activation, offering consulting, creation, execution, and installation services | Advertising Services | 🇫🇷 Saint-Ouen | 1,856 | 1983 |

## 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 12, 2026.

## More company lists in Europe

- [The largest companies in Europe](https://www.tamtam.ai/l/largest-companies-in-europe) (213,553)
- [Multinational companies in Europe](https://www.tamtam.ai/l/multinational-companies-in-europe) (42,025)
- [Companies with in-house R&D in Europe](https://www.tamtam.ai/l/r-and-d-companies-in-europe) (20,169)
- [Retail chains in Europe](https://www.tamtam.ai/l/retail-chains-in-europe) (19,259)
- [Manufacturers in Europe](https://www.tamtam.ai/l/manufacturers-in-europe) (18,156)
- [Professional services firms in Europe](https://www.tamtam.ai/l/professional-services-firms-in-europe) (13,698)
- [SaaS companies in Europe](https://www.tamtam.ai/l/saas-companies-in-europe) (13,682)
- [Software Development companies in Europe](https://www.tamtam.ai/l/software-development-companies-in-europe) (12,950)
- [Financial services firms in Europe](https://www.tamtam.ai/l/financial-services-firms-in-europe) (12,943)
- [IT Services and IT Consulting companies in Europe](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-in-europe) (11,705)
- [IT services companies in Europe](https://www.tamtam.ai/l/it-services-companies-in-europe) (11,376)
- [Hardware manufacturers in Europe](https://www.tamtam.ai/l/hardware-companies-in-europe) (10,565)
- [Family-owned companies in Europe](https://www.tamtam.ai/l/family-owned-companies-in-europe) (9,878)
- [Critical infrastructure operators in Europe](https://www.tamtam.ai/l/critical-infrastructure-operators-in-europe) (9,815)
- [Financial Services companies in Europe](https://www.tamtam.ai/l/financial-services-companies-in-europe) (9,480)
- [Consulting firms in Europe](https://www.tamtam.ai/l/consulting-firms-in-europe) (8,900)
- [Public sector organisations in Europe](https://www.tamtam.ai/l/public-sector-organisations-in-europe) (8,568)
- [Education providers in Europe](https://www.tamtam.ai/l/education-companies-in-europe) (7,925)
- [Companies with a mobile app in Europe](https://www.tamtam.ai/l/companies-with-mobile-app-in-europe) (7,898)
- [Distributors and wholesalers in Europe](https://www.tamtam.ai/l/distributors-and-wholesalers-in-europe) (7,573)
- [Retail companies in Europe](https://www.tamtam.ai/l/retail-companies-in-europe) (6,240)
- [Healthcare providers in Europe](https://www.tamtam.ai/l/healthcare-providers-in-europe) (6,132)
- [E-commerce companies in Europe](https://www.tamtam.ai/l/ecommerce-companies-in-europe) (5,864)
- [Hotel and hospitality groups in Europe](https://www.tamtam.ai/l/hospitality-groups-in-europe) (5,741)

## The same list elsewhere

- [Marketing and communications agencies in the world](https://www.tamtam.ai/l/marketing-agencies-in-the-world) (7,103)
- [Marketing and communications agencies in France](https://www.tamtam.ai/l/marketing-agencies-france) (2,084)
- [Marketing and communications agencies in the United Kingdom](https://www.tamtam.ai/l/marketing-agencies-united-kingdom) (984)
- [Marketing and communications agencies in Belgium](https://www.tamtam.ai/l/marketing-agencies-belgium) (184)
- [Marketing and communications agencies in Germany](https://www.tamtam.ai/l/marketing-agencies-germany) (163)
- [Marketing and communications agencies in Spain](https://www.tamtam.ai/l/marketing-agencies-spain) (160)
- [Marketing and communications agencies in the Netherlands](https://www.tamtam.ai/l/marketing-agencies-netherlands) (133)
- [Marketing and communications agencies in Italy](https://www.tamtam.ai/l/marketing-agencies-italy) (128)
- [Marketing and communications agencies in Switzerland](https://www.tamtam.ai/l/marketing-agencies-switzerland) (96)
- [Marketing and communications agencies in Sweden](https://www.tamtam.ai/l/marketing-agencies-sweden) (43)
- [Marketing and communications agencies in Poland](https://www.tamtam.ai/l/marketing-agencies-poland) (40)
- [Marketing and communications agencies in Denmark](https://www.tamtam.ai/l/marketing-agencies-denmark) (30)

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Source: https://www.tamtam.ai/l/marketing-agencies-in-europe