The NHS has spent decades measuring finance, activity and performance with increasing precision. Yet one of the greatest influences on all three remains one of the least systematically managed. Organisational culture is no longer simply a workforce issue. It has become a strategic issue, and one that will increasingly determine which organisations succeed, which struggle and, ultimately, the quality of care patients receive.

For years, discussions about culture have often been confined to leadership away days, staff surveys and HR strategies. It has frequently been viewed as something intangible, important but difficult to measure and even harder to improve. That assumption is becoming increasingly difficult to defend. Across the NHS, some of the most significant operational failures of recent years have shared a common thread. They have not been caused solely by financial pressure, workforce shortages or inadequate infrastructure. Instead, they have exposed environments where poor behaviours were tolerated, accountability became inconsistent, people stopped speaking up and difficult conversations were delayed until problems became crises. Recent events have once again brought this into sharp focus. At Doncaster and Bassetlaw Teaching Hospitals NHS Foundation Trust, Interim Chief Executive Zara Jones has launched a significant cultural reset following independent reviews that raised concerns about organisational behaviour during the tenure of former Chief Executive Richard Parker. At the same time, following the findings of the review into maternity services at Nottingham University Hospitals NHS Trust, Jim Mackey, NHS England Chief Executive, has argued that NHS leaders should remain accountable for decisions made during their time in office, even after they move on to other organisations. These stories are different in circumstance, but together they illustrate something much larger. Culture has moved from being an internal workforce matter to becoming a board level issue that increasingly shapes public confidence, organisational performance and regulatory scrutiny.

The timing could hardly be more significant. Every NHS organisation is being asked to improve productivity, reduce waiting lists, embrace artificial intelligence, deliver neighbourhood care, recover financially and retain an exhausted workforce. None of those ambitions can be achieved through policy alone. Every one of them depends upon people changing the way they work. That is where culture becomes decisive. Organisations with strong cultures are more likely to retain experienced staff, encourage innovation, identify risks early and respond constructively when things go wrong. Staff feel able to challenge decisions, escalate concerns and contribute new ideas without fear of blame or retribution. By contrast, organisations with unhealthy cultures often experience exactly the opposite. Innovation slows because people avoid risk. Leaders receive filtered information because staff lose confidence that concerns will be welcomed. Recruitment becomes harder, retention declines and operational performance begins to deteriorate. What initially appears to be a workforce problem often proves to be a cultural one. Productivity is not simply created through technology or investment. It is created by thousands of decisions made every day by frontline teams. Those decisions are shaped by trust, leadership and organisational behaviour. Culture is therefore no longer an abstract concept discussed in leadership seminars. It has become one of the most significant determinants of operational performance.

There is another shift taking place that deserves equal attention. For many years, compassion and accountability have too often been presented as competing priorities. They are not. The highest performing organisations demonstrate both. They support their people while maintaining clear expectations of behaviour. They address poor conduct consistently regardless of profession or seniority. They encourage challenge because they understand that disagreement, when handled constructively, strengthens decision making rather than weakening it. Perhaps most importantly, they understand that avoiding difficult conversations rarely protects culture. More often, it damages it. Staff quickly recognise when standards are applied inconsistently or when behaviours that undermine colleagues are tolerated because an individual is perceived as indispensable. Trust erodes remarkably quickly under those conditions. Restoring it takes considerably longer. This is why culture cannot remain the responsibility of HR teams alone. It must be owned collectively by boards, executive teams and operational leaders. Every promotion, every difficult conversation, every response to poor behaviour and every leadership appointment either strengthens or weakens an organisation's culture. Over time, those decisions become the organisation itself.

The NHS is entering a decade defined by transformation. Digital technology, artificial intelligence, new models of care and relentless financial pressure will require organisations to adapt more quickly than ever before. Those that succeed will almost certainly possess more than good technology or strong finances. They will have cultures that encourage openness, accountability, learning and continuous improvement. Those that fail are unlikely to do so because they lack ambition. They will struggle because the behaviours needed to deliver that ambition were never fully established. Boards routinely scrutinise financial performance, patient safety and operational delivery because they understand those issues carry strategic risk. Culture deserves exactly the same attention. It influences every one of those outcomes. Looking ahead, the organisations that consistently deliver the best care are unlikely to be distinguished solely by the sophistication of their digital infrastructure or the size of their budgets. They will be recognised for creating environments where high standards, accountability, compassion and respect are not competing values, but the foundations upon which sustainable performance is built. That is why culture is no longer simply a workforce issue. It is rapidly becoming one of the NHS's greatest strategic risks.