NumberEight secures £2.1m in pre series A funding led by ACF Investors to expand operations in the US.
The financing round was led by ACF Investors with participation from Nauta Capital, Ascension Ventures, and several strategic angels.
NumberEight builds on device artificial intelligence technology that allows advertisers to target audiences without personal data. The London based firm provides privacy first identity solutions for the digital advertising sector.
NumberEight has raised £2.1m in pre series A funding led by ACF Investors to accelerate its expansion in the United States and drive commercial growth. The round drew participation from existing backers Nauta Capital, Ascension Ventures, and Enterprise 100 angels, alongside new entrants COREangels EnterpriseTech and COREangels Big Data & AI Europe. A group of strategic angels, including mobile gaming veterans and adtech executives, also contributed to the financing.
The capital injection follows a period of sustained international growth for the behavioral intelligence startup. NumberEight provides identity solutions that operate entirely on user devices, helping publishers and advertisers navigate tightening global privacy regulations without relying on cookies or personal identifiers.
From the founder
"Against the current zeitgeist of increasing privacy regulations and data restrictions by platforms, there is an urgent need for innovative solutions that empower advertisers without compromising user privacy. This investment is a testament to our foresight in on-device AI and privacy-focused technologies, setting the stage for our global product and commercial expansion plans."

Abhishek Sen
CEO and co founder at NumberEight
Investor perspective
"Governments around the world are enacting stricter privacy regulations, making it more difficult for advertisers to collect and use user data without their consent. NumberEight’s innovative approach to identity and privacy has the potential to make a significant impact in the industry, by addressing the challenges facing advertisers and consumers alike. We are delighted to be a part of this remarkable journey."
Tim Mills
Managing Partner, ACF Investors
Use of funds
- 01Expand into international markets
- 02Continue product development
- 03Invest in sales and marketing
Investors
Tim Mills
ACF Investors

Nauta Capital
Ascension Ventures
Enterprise 100
COREangels EnterpriseTech
COREangels Big Data & AI Europe
Categories
About the company
NumberEight
NumberEight uses on device artificial intelligence to enable privacy first audience targeting for advertisers.