The agency ITSM must report to the NCSC, as soon as possible, information security incidents categorised as Critical, as Serious, or as relating to multi-agency or government systems. The control notes that a Report Form is available on the NCSC's website, found under Reporting an Incident (Report an incident and request support).
This control maps to 1 controls across 1 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 1 it maps to, and the evidence behind each claim, over MCP and REST.