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Top London AdTech Companies (166)

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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
14 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.


AdTech • Big Data • Digital Media • Software
9 Offices
915 Employees

Together, we power advertising that enables billions of people to stay informed, entertained, and connected. We introduce them to new ideas, products, and services that make their lives better. And we help media owners of all sizes realize their full potential. That’s a lot — that’s the power of advertising. But it’s only possible with great technology. And that’s where Magnite comes in. Magnite (NASDAQ: MGNI) is the world’s largest independent sell-side advertising platform. Publishers use our technology to monetize their content across all screens and formats including CTV, online video, display, and audio. Our tech fuels billions of transactions per day!


AdTech • Artificial Intelligence • Marketing Tech • Software • Analytics
12 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 • 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 • Marketing Tech
16 Offices
550 Employees

As a leading independent ad tech platform, we provide brand and privacy-safe solutions that empower our clients to achieve maximum results. We offer the market an independent ad server, SSP, buyer tools, media services, and more.

 This combination of engineering excellence and client expertise helps us serve the interests of both the supply-side and the demand-side with equal professionalism and technical sophistication. 

 And, as we work toward fulfilling on the promise of advertising technology, we also keep the consumer and their rights in mind in all we do Our objective? Disrupt the digital advertising industry through high-performance solutions, innovative formats, and exceptional quality. Our pride? A global and diverse team that flourishes through a corporate culture advocating ownership and who live through three essential values: Be brave, Be thoughtful, Be together.


AdTech • Enterprise Web • Information Technology • Machine Learning • Marketing Tech • Sales
5 Offices
300 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 • 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 • 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.


AdTech • Artificial Intelligence • Machine Learning • Marketing Tech • Software
4 Offices
1,280 Employees

Mediaocean is the mission-critical platform for omnichannel advertising. With more than $200 billion in annualized media spend managed through its software, Mediaocean connects brands, agencies, media, technology, and data. Using AI and machine learning technology to control marketing investments and optimize business outcomes, Mediaocean powers campaigns from planning, buying, ad serving, and creative personalization to analysis, optimization, invoices, and payments. Mediaocean employs 1,700 staff across 30 global offices and supports over 100,000 people using its products. Visit www.mediaocean.com for more information.


AdTech • Digital Media • Marketing Tech
3 Offices
861 Employees

Incubeta is a team of over 800 creators, thinkers, makers and doers working across 20 offices globally to unlock business growth for clients including Google, Hyundai, Netflix, HBO and L'Oréal. Incubeta combines capabilities across the full spectrum of digital disciplines to deliver standout outcomes at every brand touchpoint, from awareness to fulfilment. Incubeta’s ‘Upgrade your Growth’ narrative emphasizes how the business will grow alongside its clients focusing on expanding our services and products across the entire customer journey, giving clients back control over their data, customers, and actions. The Incubeta group has grown 20 fold over the past 7 years, offering fantastic growth opportunities for staff and helping its rising number of clients grow in a complex digital environment. The unification of its specialisms will ensure Incubeta remains at the forefront of innovation to help businesses unlock the power of digital and amplify growth.


AdTech • Digital Media • Information Technology • Other
3 Offices
10,001 Employees

Yahoo is a global media and tech company that connects people to their passions. We reach nearly 900 million people around the world, bringing them closer to what they love—from finance and sports, to shopping, gaming and news—with the trusted products, content and tech that fuel their day. For partners, we provide a full-stack platform for businesses to amplify growth and drive more meaningful connections across advertising, search and media.


AdTech • Cloud • Marketing Tech
3 Offices
1,516 Employees

InMobi is the world's leading Marketing Cloud, driving real connections between brands and consumers. We create new paths for brands to understand, identify, engage and acquire consumers by leveraging our exclusive access to mobile intelligence and technology platforms. As a leading technology company founded in 2007, InMobi has been recognized as a 2019 CNBC Disruptor 50 company and as Fast Company's 2018 Most Innovative Companies. For more information, visit inmobi.com Driving Real Connections. InMobi helps brands connect with consumers in ways that matter.


AdTech • Marketing Tech
London, England
500 Employees

We are adam&eveDDB. A place that believes in the power of creativity to create the change we want to see in the world. A place full of audacious and famous ideas that help grow businesses and shape cultures. A place packed with the energy and passion to make things happen. A place where egos are left at the door, because we know none of us is as smart as all of us. A place that welcomes ‘adam&everyone’ and helps them be the best they can be. A place always on the look-out for new creative opportunities and brilliant new talent.


AdTech • Social Media
London, England
14 Employees

The Hook Group is one of the largest youth marketing and media groups globally on social. Winning 25 industry awards in under 2 years. A media brand from Brave Bison [email protected] | 020 3968 2475 We Rapidly Scale Brands and Make them Famous on Social Happy Brands incl: Vodafone, Lionsgate, Lego, Currys PC World, Babyliss, EE, Sony, Universal, Warner Bros, NatWest, Gov.Uk, Stand Up To Cancer + many more Driving Sales & Brand Fame Award-winning Content, Influencer Marketing & Paid Social Expertise 2,000+ Original Videos Created 250M+ Follower Network 1bn Reach Guaranteed Results -------------------------------Awards Highlights------------------------------ - Best Influencer Marketing Campaign (Performance Marketing Awards 2019) - Best Brand Documentary (Brand Film Festival by Campaign 2019) - Social Media Agency of the Year (The Drum Agency Awards 2018) - Content Studio of the Year (British Media Awards 2018) (Beating Disney) - Best Branded Content (Global DIGIDAY Awards 2018)


AdTech • Marketing Tech
2 Offices
475 Employees

Kinetic uses intelligence, technology and creativity to help brands communicate with valuable audiences on the move. As the world’s largest planner and digital innovator in Out of Home advertising, we understand the customer’s physical journey better than anyone. Through the application of dynamic data and tech, we turn that journey into an Active Journey, driving people to take action in context. A global agency network within WPP, Kinetic has offices in 27 countries and an operating network of affiliates worldwide serving hundreds of agencies and brands alike.


AdTech • Automotive • Marketing Tech
London, England
200 Employees

We want to transform our urban environments by getting people out of cars and onto bikes. Our unique business model allows us to be the most affordable option for Londoners to get around sustainably. In short. WE LOVE EBIKES


AdTech • Agency • Marketing Tech
Clerkenwell, England
191 Employees

The Inside Ideas Group (IIG) – which includes leading in-housing company OLIVER, global content agency Adjust Your Set, experience and engineering company Dare and property marketing specialists Aylesworth Fleming – exists to transform brands’ business performance through the use of smarter solutions, delivered from the inside. IIG joined the world’s first brandtechTM group You & Mr Jones in 2019. You & Mr Jones holds majority stakes in five segments of the technology marketing sector: in-housing (OLIVER), data (55), consultancy (Blood/55), content creation and distribution (Mofilm, theAmplify, Gravity Road, Mobkoi) and has strategic investments in several leading technology businesses including Pinterest, Niantic, AI Foundation, VidMob, Jivox, Zappar, EVRYTHNG, Automat, Beeswax, and Gfycat.


AdTech • Marketing Tech
3 Offices
160 Employees

NetElixir is an independent growth marketing agency for leading retail, DTC, and B2B brands. We have been driving profitable growth for e-commerce businesses since 2004, by combining a high-tech and high-touch approach to digital marketing. Leveraging our AI-powered digital marketing platform, LXRInsights, we predictably identify, engage, and win high-value customers through targeted demand generation campaigns on search, social, programmatic display, and retail media channels. Our strategic insights empower brands to humanize their customer relationships and draw the line between invasive and inventive marketing


AdTech • Sales
4 Offices
21 Employees

Cornerstone Media Group provides direct response advertising solutions to generate revenue for organizations.