Evidence assurance

How UKIZ validates information.

UKIZ is only useful if you can test it. Every material statement carries an assurance marker, and behind the marker is a receipt: the proposition being validated, the source, the date it was published, the date UKIZ last checked it, any qualification or conflict, and what UKIZ does not know.

What the markers mean

  • green: Validated

    Current evidence supports this statement, provenance is intact and no material conflict is unresolved.

    • An accepted, public source supports the specific statement being made.
    • The last verification falls inside UKIZ's refresh window for that kind of fact.
    • No unresolved conflict would make the statement misleading.
  • amber: Qualified

    Usable with caution. The evidence is partial, older, indirect, conditional or carries an unresolved qualification.

    • Evidence is partial, indirect or conditional.
    • Verification is older than the refresh window, or UKIZ never recorded a check date.
    • Sources disagree on a material point and the conflict is not yet resolved.
    • The evidence supports a weaker proposition than the one being made. A facility can be evidenced as operational without being evidenced as accessible.
  • red: Not validated

    UKIZ cannot validate this from the evidence it holds. That is not the same as evidence that it does not exist.

    • UKIZ holds no accepted source for the proposition.
    • The underlying record is draft, in review, retracted or disputed.
    • Sources conflict and UKIZ cannot yet say which reading holds.

Red is not proof of absence

Almost every red state on UKIZ means we cannot validate this today. A British capability may well exist without UKIZ holding evidence for it. Where UKIZ does hold positive evidence that something is absent, such as a facility that closed or a scheme that ended, the receipt says so explicitly. The two are never presented as the same thing, and a database record alone never earns green.

Claim by claim, not answer by answer

One facility can be green for existing, amber for the scale of work it can take on, and red for a route in that UKIZ has not verified. Assurance therefore sits against propositions, not against whole answers. On consequential questions (where to locate, where to manufacture, what funding to pursue), Ask UKIZ closes with an evidence check separating what is validated, what needs checking and what is not yet validated.

How freshness works

Different facts go out of date at different speeds, so UKIZ holds a refresh cadence per kind of fact. Outside the window, assurance is downgraded automatically rather than left to look current.

  • access90 days
  • funding180 days
  • facility365 days
  • policy180 days
  • default180 days

Decision support, not a guarantee

UKIZ gives you an evidence-backed view of what we can validate today. Sources and verification dates are shown so you can test the evidence yourself. Conditions change and our information can be incomplete or wrong, so treat this as the starting point for your own due diligence before an investment or location decision.

Corrections

If something here is wrong, out of date or missing its evidence, tell us and we will check it against the source. Corrections are handled through data and corrections, and how UKIZ uses AI to interpret questions is set out in privacy and AI.