# Top 50 Advertising & Adtech Startups in the United Kingdom by Funding (2026)

> The 50 best-funded advertising & Adtech startups in the United Kingdom, ranked by total funding raised: $3.0B combined.

Source: https://millionrounds.com/top-lists/adtech-startups-united-kingdom (Millionrounds; every figure on the page links to its filing or article)

- 1 [**Synthesia** Synthesia is a British multinational AI company based in London, founded in 2017.](https://millionrounds.com/company/synthesia) Synthesia is a British multinational AI company based in London, founded in 2017. *Founded* 2017 London, United Kingdom **$506M** last round Jan 2026
- 2 [**59A** 59A is a marketing agency that provides media planning, branding, paid social media strategy, and digital advertising campaign services.](https://millionrounds.com/company/59a) 59A is a marketing agency that provides media planning, branding, paid social media strategy, and digital advertising campaign services. *Founded* 2019 United Kingdom **$257M** last round Jun 2026
- 3 [**Kape Technologies** Kape Technologies is an online distribution and digital product hub.](https://millionrounds.com/company/kape-technologies) Kape Technologies is an online distribution and digital product hub. *Founded* 2011 London, United Kingdom **$215M** last round Sept 2022
- 4 [**InfoSum** InfoSum provides a decentralized platform designed to remove the trust barriers between progress and privacy.](https://millionrounds.com/company/infosum) InfoSum provides a decentralized platform designed to remove the trust barriers between progress and privacy. *Founded* - Basingstoke, United Kingdom **$164M** last round Jun 2026
- 5 [**Two Circles** Two Circles is an international sports and entertainment marketing agency founded in 2011, headquartered in London.](https://millionrounds.com/company/two-circles) Two Circles is an international sports and entertainment marketing agency founded in 2011, headquartered in London. *Founded* 2011 London, United Kingdom **$130M** last round Oct 2024
- 6 [**Kindred** Kindred wants products, movements and campaigns that stand for something.](https://millionrounds.com/company/kindred) Kindred wants products, movements and campaigns that stand for something. *Founded* 2010 London, United Kingdom **$126M** last round Feb 2026
- 7 [**Huddle**](https://millionrounds.com/company/huddle) *Founded* - United Kingdom **$123M** last round Dec 2021
- 8 [**Ceros** Ceros is a cloud-based, no-code platform that enables marketers, designers, and creative teams to create interactive digital experiences.](https://millionrounds.com/company/ceros) Ceros is a cloud-based, no-code platform that enables marketers, designers, and creative teams to create interactive digital experiences. *Founded* 2012 New York, United Kingdom **$120M** last round Jul 2020
- 9 [**Adthena** Adthena is a competitive intelligence solution for search marketers.](https://millionrounds.com/company/adthena) Adthena is a competitive intelligence solution for search marketers. *Founded* 2012 London, United Kingdom **$110M** last round Jul 2026
- 10 [**iCrossing** We are a full-service marketing and technology company that seamlessly integrates strategy, data, creativity, and innovation to accelerate transformation.](https://millionrounds.com/company/icrossing) We are a full-service marketing and technology company that seamlessly integrates strategy, data, creativity, and innovation to accelerate transformation. *Founded* 1998 New York, United Kingdom **$108M** last round Jul 2007
- 11 [**Velocity** Our mission at Velocity is to help founders go further, faster.](https://millionrounds.com/company/velocity) Our mission at Velocity is to help founders go further, faster. *Founded* - Kitchener, United Kingdom **$105M** last round Sept 2026
- 12 [**Minute Media**](https://millionrounds.com/company/minute-media) *Founded* 2017 United Kingdom **$100M** last round Jan 2024
- 13 [**Permutive** Permutive is a London-based technology company that specializes in predictive data collaboration for the open internet.](https://millionrounds.com/company/permutive) Permutive is a London-based technology company that specializes in predictive data collaboration for the open internet. *Founded* 2016 London, United Kingdom **$76M** last round Nov 2021
- 14 [**Ogury** Ogury Limited is a global adtech company founded in February 2014 and based in London, United Kingdom.](https://millionrounds.com/company/ogury) Ogury Limited is a global adtech company founded in February 2014 and based in London, United Kingdom. *Founded* 2014 London, United Kingdom **$66M** last round Jan 2026
- 15 [**Sprout** Sprout makes wholesome, ready-to-heat food for children, crafted based on nutrition science, and loved by children and busy parents.](https://millionrounds.com/company/sprout) Sprout makes wholesome, ready-to-heat food for children, crafted based on nutrition science, and loved by children and busy parents. *Founded* 2019 United Kingdom **$52M** last round Dec 2022
- 16 [**Mirriad** Mirriad's patented, AI and computer vision technology dynamically inserts products and innovative signage formats after content is produced.](https://millionrounds.com/company/mirriad) Mirriad's patented, AI and computer vision technology dynamically inserts products and innovative signage formats after content is produced. *Founded* 2007 London, United Kingdom **$51M** last round Dec 2017
- 17 [**SuperAwesome** SuperAwesome powers the youth digital ecosystem, bringing together proprietary ad and gaming products, audience insights and compliance capabilities to build a](https://millionrounds.com/company/superawesome) SuperAwesome powers the youth digital ecosystem, bringing together proprietary ad and gaming products, audience insights and compliance capabilities to build a *Founded* 2013 London, United Kingdom **$41M** last round Feb 2019
- 18 [**GlobalWebIndex**](https://millionrounds.com/company/globalwebindex) *Founded* 2012 United Kingdom **$40M** last round Jul 2018
- 19 [**Mention Me** Mention Me is a London-based Customer Advocacy Intelligence Platform that helps ecommerce brands identify, acquire, and nurture their best customers.](https://millionrounds.com/company/mention-me) Mention Me is a London-based Customer Advocacy Intelligence Platform that helps ecommerce brands identify, acquire, and nurture their best customers. *Founded* 2013 London, United Kingdom **$38M** last round Dec 2022
- 20 [**AlertMe** AlertMe helps publishers connect directly with their readers, in ways they never could before](https://millionrounds.com/company/alertme) AlertMe helps publishers connect directly with their readers, in ways they never could before *Founded* 2016 United Kingdom **$37M** last round Oct 2010
- 21 [**Realeyes** Realeyes is an innovative artificial intelligence company founded in 2007 at Oxford University, specializing in computer vision, emotion AI, and human verificat](https://millionrounds.com/company/realeyes) Realeyes is an innovative artificial intelligence company founded in 2007 at Oxford University, specializing in computer vision, emotion AI, and human verificat *Founded* 2007 London, United Kingdom **$37M** last round Jun 2019
- 22 [**Playbuzz**](https://millionrounds.com/company/playbuzz) *Founded* - United Kingdom **$35M** last round Sept 2017
- 23 [**8 Million Stories** 8 Million Stories is a digital agency specialising in content monetisation, digital strategy & brand storytelling.](https://millionrounds.com/company/8-million-stories) 8 Million Stories is a digital agency specialising in content monetisation, digital strategy & brand storytelling. *Founded* 2013 Edinburgh, United Kingdom **$34M** last round Jan 2022
- 24 [**LoopMe** LoopMe is focused on brand advertising, using AI, attribution, and analytics to deliver measurable outcomes.](https://millionrounds.com/company/loopme) LoopMe is focused on brand advertising, using AI, attribution, and analytics to deliver measurable outcomes. *Founded* 2012 London, United Kingdom **$32M** last round Feb 2022
- 25 [**Yoyo** We deliver quality digital products including websites, campaigns and brands for digital leaders who need a fresh perspective and seek a partner that can accele](https://millionrounds.com/company/yoyo) We deliver quality digital products including websites, campaigns and brands for digital leaders who need a fresh perspective and seek a partner that can accele *Founded* 2008 Tunbridge Wells, United Kingdom **$30M** last round Oct 2018
- 26 [**Admix**](https://millionrounds.com/company/admix) *Founded* - United Kingdom **$27M** last round Oct 2021
- 27 [**Orecon** Digital Marketing & Consulting](https://millionrounds.com/company/orecon) Digital Marketing & Consulting *Founded* 2013 United Kingdom **$24M** last round Mar 2008
- 28 [**Ecrebo** Ecrebo is a retail technology company founded in 2009 or 2010, with headquarters in Reading, United Kingdom, and Chicago, Illinois.](https://millionrounds.com/company/ecrebo) Ecrebo is a retail technology company founded in 2009 or 2010, with headquarters in Reading, United Kingdom, and Chicago, Illinois. *Founded* 2010 Reading, United Kingdom **$23M** last round Feb 2017
- 29 [**Fanvue** Fanvue is a British AI-powered subscription social platform founded in 2020 and based in London.](https://millionrounds.com/company/fanvue) Fanvue is a British AI-powered subscription social platform founded in 2020 and based in London. *Founded* 2021 London, United Kingdom **$22M** last round Jan 2026
- 30 [**Swash** Swash is a London-based data ecosystem founded in 2020.](https://millionrounds.com/company/swash) Swash is a London-based data ecosystem founded in 2020. *Founded* 2020 Prescott, United Kingdom **$19M** last round Oct 2021
- 31 [**Audiomob** Audiomob is a leading non-intrusive in-game audio discovery platform that helps mobile game developers monetize their audiences through seamless audio advertisements.](https://millionrounds.com/company/audiomob) Audiomob is a leading non-intrusive in-game audio discovery platform that helps mobile game developers monetize their audiences through seamless audio advertisements. *Founded* 2020 London, United Kingdom **$18M** last round Mar 2026
- 32 [**Miappi** Miappi helps brands to discover authentic consumer stories, manage the digital rights and to distribute to marketing channels and ecommerce.](https://millionrounds.com/company/miappi) Miappi helps brands to discover authentic consumer stories, manage the digital rights and to distribute to marketing channels and ecommerce. *Founded* 2012 London, United Kingdom **$18M** last round Nov 2023
- 33 [**Navigator** The Navigator Company, S.A.](https://millionrounds.com/company/navigator) The Navigator Company, S.A. *Founded* 2016 San Francisco, United Kingdom **$17M** last round Sept 2025
- 34 [**HYP3R**](https://millionrounds.com/company/hyp3r) *Founded* - United Kingdom **$17M** last round Sept 2018
- 35 [**more2** more2 is a London-based consultancy that specializes in customer science and data-driven marketing.](https://millionrounds.com/company/more2) more2 is a London-based consultancy that specializes in customer science and data-driven marketing. *Founded* 2002 London, United Kingdom **$17M** last round Sept 2015
- 36 [**Vidsy** Vidsy is a global online creative community and technology platform that enhances video advertising by connecting enterprise brands with a diverse network of mo](https://millionrounds.com/company/vidsy) Vidsy is a global online creative community and technology platform that enhances video advertising by connecting enterprise brands with a diverse network of mo *Founded* 2015 London, United Kingdom **$17M** last round Oct 2021
- 37 [**Adbrain** Adbrain powers marketers and their partners to understand and engage with their customers 1:1 across devices, channels and platforms.](https://millionrounds.com/company/adbrain) Adbrain powers marketers and their partners to understand and engage with their customers 1:1 across devices, channels and platforms. *Founded* 2012 London, United Kingdom **$17M** last round Feb 2016
- 38 [**Captify** Captify offers a search retargeting service that enables advertisers to focus on users to match their desired audience with inventory.](https://millionrounds.com/company/captify) Captify offers a search retargeting service that enables advertisers to focus on users to match their desired audience with inventory. *Founded* 2011 London, United Kingdom **$14M** last round Jun 2015
- 39 [**VoxPopMe** Voxpopme is a global consumer insights platform that leverages AI to capture, analyze, and visualize authentic video feedback.](https://millionrounds.com/company/voxpopme) Voxpopme is a global consumer insights platform that leverages AI to capture, analyze, and visualize authentic video feedback. *Founded* 2013 Park City, United Kingdom **$14M** last round Sept 2019
- 40 [**The Exchange Lab** The Exchange Lab, a digital media marketplace, delivers campaigns evaluating the audience interactions to help its clients find prospects.](https://millionrounds.com/company/the-exchange-lab) The Exchange Lab, a digital media marketplace, delivers campaigns evaluating the audience interactions to help its clients find prospects. *Founded* 2007 London, United Kingdom **$14M** last round Dec 2013
- 41 [**TagMan** TagMan, a tag management marketing data platform, helps marketers manage the complexities of web analytics, ecommerce data and e-privacy.](https://millionrounds.com/company/tagman) TagMan, a tag management marketing data platform, helps marketers manage the complexities of web analytics, ecommerce data and e-privacy. *Founded* 2007 United Kingdom **$14M** last round Aug 2013
- 42 [**Auddy** Auddy is a London-based audio and podcast publishing company that connects brands, organizations, and creators with targeted audiences through innovative audio solutions.](https://millionrounds.com/company/auddy) Auddy is a London-based audio and podcast publishing company that connects brands, organizations, and creators with targeted audiences through innovative audio solutions. *Founded* 2020 London, United Kingdom **$12M** last round Feb 2025
- 43 [**TVSquared** TVSquared is the global leader in TV attribution.](https://millionrounds.com/company/tvsquared) TVSquared is the global leader in TV attribution. *Founded* 2012 United Kingdom **$12M** last round Oct 2021
- 44 [**Ocean Outdoor** Ocean is a media advertising company specialized in designing iconic landmark large-format digital banners in super-premium locations.](https://millionrounds.com/company/ocean-outdoor) Ocean is a media advertising company specialized in designing iconic landmark large-format digital banners in super-premium locations. *Founded* 2007 London, United Kingdom **$12M** last round May 2008
- 45 [**Yieldify** Yieldify is a personalization platform that helps marketers unlock more revenue by engaging their customers with personalized experiences.](https://millionrounds.com/company/yieldify) Yieldify is a personalization platform that helps marketers unlock more revenue by engaging their customers with personalized experiences. *Founded* 2013 London, United Kingdom **$12M** last round Jun 2015
- 46 [**Relative Insight** Relative Insight is a British technology and data analytics company founded in 2012 by Dr.](https://millionrounds.com/company/relative-insight) Relative Insight is a British technology and data analytics company founded in 2012 by Dr. *Founded* 2012 London, United Kingdom **$12M** last round Mar 2022
- 47 [**Bidstack** Bidstack reshapes video game monetisation with Dynamic Ad Placements that engage players and connect brands into virtual worlds responsibly.](https://millionrounds.com/company/bidstack) Bidstack reshapes video game monetisation with Dynamic Ad Placements that engage players and connect brands into virtual worlds responsibly. *Founded* 2015 London, United Kingdom **$11M** last round Oct 2022
- 48 [**Buyapowa** Buyapowa is a London-based marketing technology company that specializes in cloud-based referral and reward marketing software.](https://millionrounds.com/company/buyapowa) Buyapowa is a London-based marketing technology company that specializes in cloud-based referral and reward marketing software. *Founded* 2011 London, United Kingdom **$11M** last round May 2022
- 49 [**Covatic** Covatic is a Birmingham-based adtech company founded in 2016, originally spun out of the University of Oxford.](https://millionrounds.com/company/covatic) Covatic is a Birmingham-based adtech company founded in 2016, originally spun out of the University of Oxford. *Founded* 2017 Birmingham, United Kingdom **$10M** last round Jun 2026
- 50 [**Smartology** Digital advertising technology company](https://millionrounds.com/company/smartology) Digital advertising technology company *Founded* 2010 London, United Kingdom **$9.5M** last round Dec 2024

**Total funding** how the list is ranked

**15 November 2026** updated nightly

**Rounds we track** source: Millionrounds

Companies whose funding rounds we classed in this sector, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.

## Who backed them?

Open any company for its rounds and investors, or search the investors who back advertising & Adtech startups in the United Kingdom in the app, with filters, lists and exports.

[Find their investors](https://millionrounds.com/login?join=1&next=/app/investors)[All top lists](https://millionrounds.com/top-lists)

## More advertising & adtech lists

[See all](https://millionrounds.com/top-lists?t=Advertising%20%26%20Adtech)

[*A* *P* *L* **Advertising & Adtech startups in the United States** 1,107 companies · $19B](https://millionrounds.com/top-lists/adtech-startups-united-states)[*M* *W* *WG* **Advertising & Adtech startups in New York** 148 companies · $4.2B](https://millionrounds.com/top-lists/adtech-startups-new-york)[*S* *KT* *TC* **Advertising & Adtech startups in London** 96 companies · $1.7B](https://millionrounds.com/top-lists/adtech-startups-london)[*S* *W* *P* **Advertising & Adtech startups founded in 2018** 91 companies · $798M](https://millionrounds.com/top-lists/adtech-startups-founded-2018)[*P* *W* *5* **Advertising & Adtech startups that raised in 2026** 85 companies · $3.6B in 2026](https://millionrounds.com/top-lists/adtech-startups-raised-2026)[*M* *T* *WT* **Advertising & Adtech startups in France** 82 companies · $1.5B](https://millionrounds.com/top-lists/adtech-startups-france)[*WG* *5* *V* **Advertising & Adtech startups founded in 2019** 77 companies · $1.3B](https://millionrounds.com/top-lists/adtech-startups-founded-2019)[*I* *VC* *F* **Advertising & Adtech startups in San Francisco** 75 companies · $2.4B](https://millionrounds.com/top-lists/adtech-startups-san-francisco)

## More lists for United Kingdom

[See all](https://millionrounds.com/top-lists?r=United%20Kingdom)

[*SC* *N* *F* **Startups in the United Kingdom** 8,355 companies · $79B](https://millionrounds.com/top-lists/startups-united-kingdom)[*IL* *CS* *ON* **Health startups in the United Kingdom** 1,094 companies · $17B](https://millionrounds.com/top-lists/health-startups-united-kingdom)[*N* *AA* *IL* **AI startups in the United Kingdom** 835 companies · $32B](https://millionrounds.com/top-lists/ai-startups-united-kingdom)[*C* *T* *K* **IT Services startups in the United Kingdom** 816 companies · $5.3B](https://millionrounds.com/top-lists/it-services-startups-united-kingdom)[*IL* *CS* *ON* **Healthcare startups in the United Kingdom** 608 companies · $14B](https://millionrounds.com/top-lists/healthcare-startups-united-kingdom)[*IL* *CS* *ON* **Biotech startups in the United Kingdom** 588 companies · $15B](https://millionrounds.com/top-lists/biotech-startups-united-kingdom)[*F* *FC* *R* **Financial Services startups in the United Kingdom** 472 companies · $26B](https://millionrounds.com/top-lists/financial-services-startups-united-kingdom)[*FC* *R* *C* **Fintech startups in the United Kingdom** 342 companies · $23B](https://millionrounds.com/top-lists/fintech-startups-united-kingdom)