# Top 50 Advertising & Adtech Startups in London by Funding (2026)

> The 50 best-funded advertising & Adtech startups in London, ranked by total funding raised: $1.7B combined.

Source: https://millionrounds.com/top-lists/adtech-startups-london (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 [**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
- 3 [**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
- 4 [**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
- 5 [**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
- 6 [**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
- 7 [**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
- 8 [**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
- 9 [**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
- 10 [**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
- 11 [**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
- 12 [**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
- 13 [**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
- 14 [**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
- 15 [**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
- 16 [**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
- 17 [**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
- 18 [**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
- 19 [**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
- 20 [**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
- 21 [**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
- 22 [**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
- 23 [**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
- 24 [**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
- 25 [**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
- 26 [**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
- 27 [**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
- 28 [**Quill Content** We produce quality digital content for businesses to use on their websites and social media.\\We specialise in Primary Content: the critical pre-purchase inform](https://millionrounds.com/company/quill-content) We produce quality digital content for businesses to use on their websites and social media.\\We specialise in Primary Content: the critical pre-purchase inform *Founded* 2011 London, United Kingdom **$9.1M** last round Mar 2014
- 29 [**Pixoneye** Pixoneye develops a digital marketing platform that offers personalized and programmatic marketing and image understanding solutions.](https://millionrounds.com/company/pixoneye) Pixoneye develops a digital marketing platform that offers personalized and programmatic marketing and image understanding solutions. *Founded* 2014 London, United Kingdom **$8.3M** last round May 2018
- 30 [**Glow Digital Media** Glow Digital Media provides social network advertising services.](https://millionrounds.com/company/glow-digital-media) Glow Digital Media provides social network advertising services. *Founded* 2011 London, United Kingdom **$8.3M** last round Jul 2014
- 31 [**Adfonic** Adfonic is an AI click fraud prevention software platform, designed to safeguard digital advertisers and businesses against fraudulent clicks and malicious acti](https://millionrounds.com/company/adfonic) Adfonic is an AI click fraud prevention software platform, designed to safeguard digital advertisers and businesses against fraudulent clicks and malicious acti *Founded* 2008 London, United Kingdom **$8.1M** last round Sept 2011
- 32 [**AMT** Agentic Marketing Technologies, Inc.](https://millionrounds.com/company/amt) Agentic Marketing Technologies, Inc. *Founded* 2014 London, United Kingdom **$7.5M** last round Oct 2010
- 33 [**Wooshii** Video Development And Optimization](https://millionrounds.com/company/wooshii) Video Development And Optimization *Founded* 2009 London, United Kingdom **$5.5M** last round Jun 2019
- 34 [**Laminar Global** Laminar Global Limited (Laminar) is a Platform as a Service (PaaS) supplier.](https://millionrounds.com/company/laminar-global) Laminar Global Limited (Laminar) is a Platform as a Service (PaaS) supplier. *Founded* 2020 London, United Kingdom **$5.1M** last round May 2022
- 35 [**PubX** pubX is a London-based startup founded in 2020 that specializes in Publisher Technology (PubTech) solutions using Artificial Intelligence (AI) and automation.](https://millionrounds.com/company/pubx) pubX is a London-based startup founded in 2020 that specializes in Publisher Technology (PubTech) solutions using Artificial Intelligence (AI) and automation. *Founded* 2020 London, United Kingdom **$5.0M** last round Oct 2026
- 36 [**Adludio** Adludio is an AI-powered brand performance platform that specializes in interactive, mobile-first advertising campaigns.](https://millionrounds.com/company/adludio) Adludio is an AI-powered brand performance platform that specializes in interactive, mobile-first advertising campaigns. *Founded* 2015 London, United Kingdom **$4.1M** last round Apr 2023
- 37 [**Lumen Research** Lumen is a specialist eye tracking research agency based in London, who help optimise advertising across a number of platforms.](https://millionrounds.com/company/lumen-research) Lumen is a specialist eye tracking research agency based in London, who help optimise advertising across a number of platforms. *Founded* 2013 London, United Kingdom **$3.8M** last round Sept 2024
- 38 [**Ad-MOTO** Ad-MOTO is a London-based digital out-of-home (DOOH) advertising company that was founded in 2020.](https://millionrounds.com/company/ad-moto) Ad-MOTO is a London-based digital out-of-home (DOOH) advertising company that was founded in 2020. *Founded* 2020 London, United Kingdom **$3.7M** last round May 2025
- 39 [**Contact** Contact is a UK-based platform launched in 2020, designed to streamline bookings and payments for the fashion and creative industries.](https://millionrounds.com/company/contact) Contact is a UK-based platform launched in 2020, designed to streamline bookings and payments for the fashion and creative industries. *Founded* 2018 London, United Kingdom **$3.7M** last round May 2022
- 40 [**Drovo** Drovo, based in London, is a leading transit media advertising technology company that specializes in out-of-home (OOH) advertising.](https://millionrounds.com/company/drovo) Drovo, based in London, is a leading transit media advertising technology company that specializes in out-of-home (OOH) advertising. *Founded* 2015 London, United Kingdom **$3.6M** last round Oct 2023
- 41 [**CrowdIt Ltd** Crowdit is a mobile based application that enables users to find out what events and deals are available in their city.](https://millionrounds.com/company/crowdit-ltd) Crowdit is a mobile based application that enables users to find out what events and deals are available in their city. *Founded* 2012 London, United Kingdom **$3.6M** last round Nov 2015
- 42 [**InSkin Media** InSkin Media is an advertising technology business, which develops high-impact, non-intrusive brand advertising formats.](https://millionrounds.com/company/inskin-media) InSkin Media is an advertising technology business, which develops high-impact, non-intrusive brand advertising formats. *Founded* 2009 London, United Kingdom **$3.2M** last round Oct 2012
- 43 [**LandVault** LandVault is a programmatic monetization platform for in-game advertising.](https://millionrounds.com/company/landvault) LandVault is a programmatic monetization platform for in-game advertising. *Founded* - London, United Kingdom **$3.0M** last round Mar 2023
- 44 [**Blend Media** Blend Media is a London-based company founded in 2015 that specializes in creating and licensing immersive content, including 360° video, virtual reality (VR),](https://millionrounds.com/company/blend-media) Blend Media is a London-based company founded in 2015 that specializes in creating and licensing immersive content, including 360° video, virtual reality (VR), *Founded* 2016 London, United Kingdom **$2.9M** last round May 2021
- 45 [**Aggero** Aggero is an AI-powered technology company based in London that specializes in video social listening and analytics.](https://millionrounds.com/company/aggero) Aggero is an AI-powered technology company based in London that specializes in video social listening and analytics. *Founded* 2018 London, United Kingdom **$2.6M** last round Mar 2022
- 46 [**Admedo Ltd** Admedo provides a self-serve online advertising platform for businesses and agencies.](https://millionrounds.com/company/admedo-ltd) Admedo provides a self-serve online advertising platform for businesses and agencies. *Founded* 2013 London, United Kingdom **$2.5M** last round Jul 2014
- 47 [**Sine Digital** SINE Digital is a performance marketing agency based in London and New York, specializing in the live entertainment, sports, fashion, and e-commerce sectors.](https://millionrounds.com/company/sine-digital) SINE Digital is a performance marketing agency based in London and New York, specializing in the live entertainment, sports, fashion, and e-commerce sectors. *Founded* 2018 London, United Kingdom **$2.5M** last round May 2024
- 48 [**Nodals AI** Nodals AI is a London-based advertising platform that leverages AI technology to connect advertisers with first-party data from media owners.](https://millionrounds.com/company/nodals-ai) Nodals AI is a London-based advertising platform that leverages AI technology to connect advertisers with first-party data from media owners. *Founded* 2024 London, United Kingdom **$2.5M** last round Feb 2025
- 49 [**CheckoutSmart** CheckoutSmart is a UK-based FMCG marketing and shopper-engagement company dedicated to enhancing the online reputation of brands and driving shopper activation](https://millionrounds.com/company/checkoutsmart) CheckoutSmart is a UK-based FMCG marketing and shopper-engagement company dedicated to enhancing the online reputation of brands and driving shopper activation *Founded* 2012 London, United Kingdom **$2.4M** last round Nov 2014
- 50 [**Captive Media** Captive Media manufactures an interactive entertainment and digital signage system for installation in washrooms.](https://millionrounds.com/company/captive-media) Captive Media manufactures an interactive entertainment and digital signage system for installation in washrooms. *Founded* 2011 London, United Kingdom **$2.2M** last round Feb 2015

**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.

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