Check an AI supplier before you buy

AI TrustMark is an independent verification layer for AI services. It checks supplier, product, operating-control and customer evidence, then publishes what was examined, how deeply it was checked and when. It is not a government scheme, UKAS-accredited certification body or a paid ranking marketplace.

Independent verification means a named scope is checked against evidence rather than accepted as a supplier claim. Public records state the evidence inspected, the evidence grade, the date and any unresolved gap. Buyers still make their own award, legal and risk decisions.

A TrustMark is a verified assessment status for a defined scope. Customer-review stars are a separate 1 to 5 evidence stream used for directory order once ranking eligibility is unlocked. The Assurance Score is a separate 0 to 100 product-assessment measure. Payment cannot buy any of them.

No. Payment can fund review collection, verification labour or assessment depth, but it cannot buy review stars, directory position, a higher Assurance Score or a predetermined certificate outcome.

Buyers can use independently verified supplier, product, security, privacy, governance and customer evidence, then map that evidence to procurement requirements. The free route finder scopes the next workstream; tailored packs, matrices and assessments remain professional services.

They describe investigation depth, not a league table of providers. Bronze uses external evidence, Silver adds operational evidence, and Gold adds technical examination where access is granted. Deeper investigation is not a claim that a supplier is better.

No. ISO/IEC 42001 is an AI management-system standard that can be certified by an accredited body. AI TrustMark is independent product and supplier assurance. It is not UKAS accreditation, ISO certification or a substitute for the buyer's legal obligations.