Attest is a London-based consumer research platform founded in 2015. As a B2B SaaS company, it provides businesses with fast and reliable access to target audiences for actionable insights.
| Founded | 2015 (11 years) |
| Latest funding | Series B |
| Employees | 110 |
| Headquarters | London, United Kingdom |
| Trusted networks on Proven | 3 investor, bank and government networks offer Attest to their members |
Company facts from Apollo.io company data. Network, offer and redemption data from the Proven platform. A Proven Score is published once publicly named clients are verified with sources.
Source: Proven platform data, public records and vendor websites. Vendors cannot pay to change a score. Methodology. Updated 2026-10-21.