Definition
The principles of PSIRF are its four aims: compassionate engagement and involvement of those affected by patient safety incidents, application of system-based approaches to learning from incidents, considered and proportionate responses, and supportive oversight focused on strengthening response system functioning and improvement. Each aim has its own NHS England supporting guidance.
Source: NHS England, August 2022 · Last reviewed 6 July 2026
- 01Compassionate engagementthose affected are involved in shaping the response, not informed of its findings
- 02System-based learningthe study of a system replaces the hunt for a root cause
- 03Proportionate responseseffort is directed by learning potential, not by category
- 04Supportive oversightscrutiny aimed at strengthening response capability
Compassionate engagement and involvement
The first aim covers those affected by an incident: patients, families and staff. Under the old framework, families were typically informed of an investigation's findings. Under PSIRF they are involved in shaping it, starting with the terms of reference of a PSII. NHS England's guidance on engaging and involving patients, families and staff sets the expectations, and organisations name trained engagement leads to carry them out.
Staff are inside this aim too, deliberately. The people involved in an incident are treated as affected parties and as the best source of understanding about how the work actually happens, rather than as subjects of the investigation. That framing is what makes honest accounts possible.
System-based approaches to learning
The second aim replaces the hunt for a root cause with the study of a system. Incidents are understood as products of interacting conditions: staffing, equipment, environment, task design, culture and the informal workarounds that keep services running. The SEIPS model underpins the national tools, described on the learning responses page, and the practical test of this aim is simple to state: does the response explain what made the incident likely, or does it stop at who touched it last?
Considered and proportionate responses
The third aim is the resourcing argument. Incident response capacity is finite, and the old framework spent it by category: everything above a threshold got the same instrument regardless of what could be learned. PSIRF directs effort by learning potential. The organisation's incident response plan decides in advance which incident types warrant which response, and where a risk is already understood and being addressed, no individual response may be the right answer. Proportionality is not a licence to do less; it is an instruction to do more where it counts.
Supportive oversight
The fourth aim rewires accountability. Integrated care boards no longer sign off individual investigation reports; they look at whether the provider's response system works, and boards track whether safety actions changed anything. The oversight roles and responsibilities specification defines who does what, and the response standards give oversight roles their own training expectations. The word "supportive" is doing real work here: the guidance frames oversight as strengthening response capability rather than marking homework.
How the aims work together
The aims are a system themselves. Proportionate response frees the capacity that system-based learning needs. System-based learning produces findings worth engaging people over. Engagement produces the trust that makes staff accounts honest, which improves the learning. And oversight that measures improvement rather than paperwork keeps the other aims honest. Pull one aim out and the others weaken, which is why NHS England published guidance for each rather than a single policy note, and why implementation is sequenced across all of them rather than started from the paperwork.