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Top London Marketing Tech Companies (364)

Consumer Web • eCommerce • Marketing Tech • Retail • Software • Analytics • Generative AI
6 Offices
2,300 Employees

Klaviyo (NYSE: KVYO) is the only CRM built for B2C brands. Powered by its built-in data platform and AI insights, Klaviyo combines marketing automation, analytics, and customer service into one unified solution, making it easy for businesses to know their customers and grow faster. Klaviyo (CLAY-vee-oh) helps relationship-driven brands like Mattel, Glossier, Core Power Yoga, Daily Harvest and 169,000+ others deliver 1:1 experiences at scale, improve efficiency, and drive revenue.


Artificial Intelligence • Digital Media • eCommerce • Marketing Tech • Software
12 Offices
800 Employees

Rokt is the global leader in ecommerce, unlocking real-time relevance in the moment that matters most - The Transaction Moment. Rokt’s AI Brain and Ecommerce Network powers billions of transactions connecting hundreds of millions of customers, and is trusted to do this by the world’s leading companies including Live Nation, Macy’s, AMC Theatres, PayPal, Uber, Hulu, Staples, Albertsons and HelloFresh. Headquartered in New York City, Rokt has offices across North America, Europe, and the Asia-Pacific region. To learn more, visit Rokt.com.


AdTech • Big Data • Digital Media • Marketing Tech
16 Offices
900 Employees

Integral Ad Science (IAS) is a leading global media measurement and optimization platform that delivers the industry’s most actionable data to drive superior results for the world’s largest advertisers, publishers, and media platforms. IAS’s software provides comprehensive and enriched data that ensures ads are seen by real people in safe and suitable environments, while improving return on ad spend for advertisers and yield for publishers. Our mission is to be the global benchmark for trust and transparency in digital media quality. For more information, visit integralads.com.


AdTech • Digital Media • Marketing Tech
16 Offices
5,000 Employees

Comcast Advertising is driving the TV advertising industry forward, from delivering ads to linear and digital audiences to pioneering the tech that makes it possible. We help brands connect with their audiences on every screen using advanced data. Just as important as our work is our inclusive and supportive culture, which has earned us recognition as one of the top ten places to work by Great Place to Work.


Marketing Tech • Mobile • Software
15 Offices
1,500 Employees

At Braze, we believe in the passion of our people. We seek to ignite that passion by setting high standards, championing teamwork, and creating work-life harmony. We thrive when people add their unique perspectives to our ever-growing teams—and we strive to empower you to make an impact that fuels both you, and our business.


AdTech • Artificial Intelligence • Digital Media • Marketing Tech • Social Media • Software • Generative AI
9 Offices
805 Employees

We solve for advertising campaign and creative complexities - both key elements to the time/money savings and performance that brands, agencies and businesses seek. Our unified platform combines media, creative, and intelligence, offering end-to-end workflows powered by AI across the open and closed web. With over 700 brands and advertisers, we've proven that dynamic and personalized creative makes advertising impactful. We are on a mission to transform the advertising experience for brands and their consumers. ⚡️


AdTech • Digital Media • Marketing Tech • Other
3 Offices
173 Employees

adMarketplace is the leader in search advertising on the open web. For over two decades, adMarketplace has delivered relevant search advertising to consumers who skip the legacy search engine results page. The world's largest search advertisers drive measurably incremental results from adMarketplace's exclusive media opportunities across the internet's leading browsers, shopping apps, and editorial sites. Our mission is to shape the consumer journey with relevant search advertising and measure media value transparently across diverse moments of consumer intent.


AdTech • Artificial Intelligence • Marketing Tech • Software • Analytics
13 Offices
2,194 Employees

Zeta Global (NYSE: ZETA) is the AI-Powered Marketing Cloud that leverages advanced artificial intelligence (AI) and trillions of consumer signals to make it easier for marketers to acquire, grow and retain customers more efficiently. Through the Zeta Marketing Platform (ZMP), our vision is to make sophisticated marketing simple by unifying identity, intelligence and omnichannel activation into a single platform – powered by one of the industry’s largest proprietary databases and AI. Our enterprise customers across multiple verticals are empowered to personalize experiences with consumers at an individual level across every channel, delivering better results for marketing programs. Zeta was founded in 2007 by David A. Steinberg and John Sculley and is headquartered in New York City with offices around the world.


AdTech • Digital Media • eCommerce • Marketing Tech • Sales
2 Offices
500 Employees

MVF powers growth for our clients by connecting them to potential customers. The digital marketing landscape is complex and constantly evolving. Businesses need experts who are tracking that evolution and finding new ways to innovate and win. This is where MVF comes in. We match readers, buyers, & business leaders with the brands & companies that make the products and services they need. We do this by building relationships with potential customers at each stage of the marketing funnel by offering insights, information, and tools to help them learn more about the things they’re interested in. We build profiles on our audiences, guide them through purchase decisions, and ultimately connect them to the right products/services when they are ready to buy. Our clients trust us as experts in lead generation, which frees up their time to do what they do best.

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Agency • Gaming • Marketing Tech • Mobile • Analytics
9 Offices
2,300 Employees

tms unites technology and marketing and sourcing to drive transformational change for the world’s leading brands. With 1200+ employees across 26 countries, we offer an impressive range of solutions — from inspiration and innovation to category management and delivery. ​ Headquartered in Chicago with 10 offices worldwide, we are responsible for some of the world’s most successful and iconic long-term marketing platforms, including McDonald’s Happy Meal and MONOPOLY programs. Operating as a creative agency, a strategic consultancy and a technology provider, we engage with over 110 million customers every single day for clients including McDonald’s, adidas, T-Mobile, Starbucks, Vue and O2.


eCommerce • Information Technology • Marketing Tech • Software
7 Offices
450 Employees

Akeneo is the product experience (PX) company and global leader in Product Information Management (PIM). Akeneo empowers business leaders with software, education, and an engaged community all focused on the practice of product experience management. Leading brands, manufacturers, distributors, and retailers, including Chico’s, CarParts.com, TaylorMade Golf, Rail Europe, Kering, and more trust Akeneo to scale their commerce initiatives. Using Akeneo’s intelligent Product Cloud, companies can create elevated product experiences with user-friendly and AI-powered product data enrichment, management, syndication, and supplier data onboarding, and an app marketplace and partner network to meet business and buyer needs.


AdTech • Artificial Intelligence • Machine Learning • Marketing Tech • Software • Sports • Big Data Analytics
13 Offices
1,800 Employees

From enabling sports to better collect and manage their data, to applying it to power better fan engagement, our technology and expertise delivers the difference to more than 700 sports, betting and media partners around the world. Founded in 2001, Genius Sports is now one of the world’s largest sports technology companies with over 1,800 employees. We're headquartered in London and have offices in New York, LA, Medellin, Tallinn, Sofia, Melbourne, Bologna, Vilnius, Lausanne and Singapore.


AdTech • Enterprise Web • Information Technology • Machine Learning • Marketing Tech • Sales
5 Offices
400 Employees

OpenX is focused on unleashing the full economic potential of digital media companies. We do this by making digital advertising markets and technologies that are designed to deliver optimal value to publishers and advertisers on every ad served across all screens.


AdTech • Artificial Intelligence • Digital Media • Marketing Tech
7 Offices
545 Employees

GumGum is a contextual-first, global digital advertising platform that uses advanced AI technology to serve captivating creative ads that drive consumer attention, without the use of personal data. At GumGum, we don’t need to know who you are to deliver relevant and engaging ads that align with your active frame of mind. We believe that a digital advertising industry based on context rather than personal data builds a more equitable and less invasive future for the internet and is better for consumers, publishers and advertisers alike. Our blueprint for the future, The Mindset Matrix™, combines the power of context and creative in digital advertising to deliver superior attention and drive consumer action without sacrificing personal data. To be a part of this next phase of digital advertising that prioritizes data privacy, please visit www.gumgum.com/careers


AdTech • Healthtech • Marketing Tech
4 Offices
1,059 Employees

Inizio Evoke is a global health marketing, communications, and transformation platform unlocking growth through data-driven insights and human centricity. We are purpose-built to make Health more human™. With core expertise and specialty brands in Marketing, Comms, Transformation, Access, and Media, we serve as a premier partner for the world's most ambitious healthcare organizations. Inizio Evoke is an Inizio company. Inizio helps clients navigate their clinical development and commercialization journey by connecting best-in-class scientific knowledge, market intelligence, actionable data, cutting-edge technology, communication, and creative execution


Marketing Tech • Retail • Analytics
London, England
16 Employees

Tallarium is a market data and digital solutions provider that enables energy majors, trading houses, banks, utilities and funds in OTC energy markets to improve trading performance and manage risk more effectively. We provide our clients with the opportunity to see live and objective market pricing data that allows them to make better trade decisions faster and instantly respond to market risk. Combining advanced data science and machine learning across hundreds of markets, we provide insight and clarity in opaque and noisy energy markets.


AdTech • Marketing Tech • Social Media
London, England
412 Employees

Greenpark is a global, multi-award-winning, performance-driven content leader and brand publishing agency. Our purpose is to create meaningful connections that impact people’s lives through performance-driven content for search and social. Our unique expertise in Insights & SEO, Creative Content and Performance Tech are delivered to our clients via an ad agency and in-house model. We strive and act together in our ambition to make a positive impact for the people and brands we serve, we do everything with kindness and respect at the core. ‘We Strive’, ‘Acting Together’, ‘With Kindness’ are the values that guide us. We have a proud and proven track-record of helping brands amplify their digital presence to a worldwide audience, enabling brands to own their audiences, capture first-party data and save millions in paid media. Across our regional hubs, we create and manage high-performing content for over 150 brand websites, content hubs and social media accounts, including: AllthingsHair.com, MasakApaHariIni.com, BEAUTYHUB.PH, CadaCasaUmCaso.br BeautyDaily.Clarins.co.uk and TheMixer.com. Our teams work on an impressive portfolio of clients including Unilever, Clarins, AIA, Straumann, Unilever Food Solutions, Sanofi, Campari Group, Nestle, Knorr, Lipton, PepsiCo, Ricola, Perfect Day, Globe Telecom and Reckitt. Greenpark’s 8-hub offices are located in Singapore, Jakarta, London, São Paulo, New York, Cape Town, Amsterdam and Paris


AdTech • Big Data • Digital Media • Marketing Tech • Software • Big Data Analytics
6 Offices
400 Employees

Sensor Tower cultivates responsibly sourced market intelligence that provides visibility into the trends shaping the global digital economy. Our customers use these insights to help them make better business decisions. Sensor Tower data is frequently cited by top-tier trusted media institutions, including the New York Times, Bloomberg, Reuters, CNBC and more, as well as financial and academic institutions.


Marketing Tech
2 Offices
2,496 Employees

Lloyd’s is the world’s leading marketplace for insurance and reinsurance. Through the collective intelligence and risk-sharing expertise of the market’s underwriters and brokers, Lloyd’s helps to create a braver world.


Marketing Tech • Social Impact • Analytics
2 Offices
576 Employees

60 Decibels is a global, tech-enabled impact measurement company that brings speed and scalability to social impact measurement and customer insights. We provide genuine benchmarks of impact performance, enabling organizations to understand impact relative to peers and set performance targets. We have a network of 1200+ researchers in 80+ countries, and have worked with more than 1000 of the world’s leading impact investors, companies, foundations, corporations, NGOs, and public sector organizations. Medium: https://60-decibels.medium.com/ Twitter: https://twitter.com/60_decibels