The shifting profile of the clinical nursing workforce in a post-COVID NHS
Despite record numbers on the nursing register, the NHS is increasingly reliant on a younger and less experienced workforce. Analysis of workforce deployment data suggests a widening gap between planned staffing and the staff actually available to deliver care – raising questions about resilience, mentorship and patient safety.
Since the COVID-19 pandemic, the UK nursing workforce has undergone significant structural changes, particularly in the distribution of the NHS band grades. What is often overlooked in workforce discussions, but increasingly felt on wards and in community settings, is how these shifts are affecting patient safety, clinical confidence and professional judgement.
Following the pandemic, a greater proportion of less experienced staff are now at the front end of direct patient care, making some of the most safety critical decisions. This is exacerbated by stretched senior staff presence resulting in less opportunity for mentorship, skills development and clinical supervision.
Coupled with this, the way our existing workforce is being utilised reveals a widening gap between planned headroom and the actual availability of staff on the ground. As such, reactive responses to unplanned gaps in staffing can lead to inappropriate skill mixes and place further pressure on the clinical confidence of our less experienced workforce.
Who do we have – and how is the workforce being utilised?
To understand the scale of this challenge, RLDatix has examined workforce insight from the UK’s main health and care clinical planning and deployment system, Optima.
Key data for patterns of unavailability, activity, geographic changes, along with red flag and professional judgement application over time and by staff band, have been considered.
The headline numbers suggest that, on paper, the UK has a larger registered nursing workforce than ever before. In 2025, the Nursing and Midwifery Council (NMC) Register reached a record 860,801 nurses, midwives and nursing associates eligible to practise (of whom 793,694 were nurses), while the NHS continued to carry around 25,500 vacant registered nursing posts. Yet only around a third of nursing staff report that there are enough registered nurses on shift—a perception that speaks volumes about the reality of day-to-day staffing.
f only it were a numbers game. The changing profile of the workforce post-COVID, rising care demand and the reality of workforce availability combine to create structural pressures that increasingly renders headline figures misleading.
Much of the pressure on the nursing workforce remains unseen and is therefore not fully captured in the numbers. Excess capacity and corridor care, rising patient acuity and complexity, reduced access to experienced senior mentorship, and greater reliance on non-EU recruits who require adaptation and supervision, all add to the strain on an already stretched workforce.
In some areas, we are only just beginning to quantify this hidden demand. Nowhere is this more evident than in community services, where improving visibility of clinical capacity and patient need is starting to expose levels of deferred care, the community equivalent of corridor care. Addressing this will require significant increases in capacity.
Poor workforce data visibility
Across all sectors, there is another significant challenge that undermines workforce planning: a consistently growing gap between the workforce the NHS believes it has, and the workforce actually available.
This gap is not being driven by vacancies, but from the unaccounted absence of staff who are considered part of the existing workforce. Although some providers have historically modelled nursing headroom at around 20-22 per cent, updated professional guidance recommends a minimum uplift of 27 per cent when setting nursing establishments. Even this can underestimate the reality, with many providers now experiencing workforce unavailability of 26-32 per cent.
This additional gap is largely being absorbed by additional duties layered on top of temporary staffing already used to cover vacancies. The consequences are increasingly visible: the resilience of a less experienced workforce is challenged, with sickness absence now the dominant driver of unavailability. Rates of 5-10 per cent sickness absence, largely linked to stress, anxiety and depression, far exceed the 3 per cent usually accounted for in headroom projections. In some services, this creates an overall variance of up to 13 per cent between planned staffing levels and the workforce actually available to deliver care.
The combined effect of a changing workforce profile, rising care demand, and reduced availability, therefore makes traditional staffing assumptions unreliable.
What does this mean for safe staffing and patient safety?
Although recruitment has increased, the loss of experienced staff and growing reliance on lower-band roles are raising serious concerns for care quality, staff wellbeing, and system resilience. One clear indicator is who is now identifying and managing staffing risks. Compared to the pre-COVID period, red flags and professional judgements are increasingly being applied by less experienced clinical staff.
Analysis of RLDatix Optima workforce deployment data suggests a marked shift in who is identifying and mitigating workforce-related risks. In 2019, around a third of critical workforce related risks were raised by Band 7 staff. By 2025 this had fallen to a quarter, with Bands 5 and 6 accounting for the majority. A similar shift is seen in risk mitigation, where professional judgement has moved from Band 7 and 6 to Band 6 and 5. This shift is significant.
Newly qualified nurses have entered the workforce in a highly stressful post-pandemic environment. At the same time, many of those now responsible for safe staffing decisions (typically Bands 6 and 7) have themselves either been recruited or promoted since the pandemic, with the majority stepping into these roles in the last two years. Together, this has resulted in a diminished organisational memory of established safe staffing principles across the UK.
Many provider organisations also report inconsistencies in how acuity tools are applied when setting establishments. In some settings, lingering command-and-control leadership models have shaped a workforce that knows no other way of working. As a result, the escalation of staffing concerns has become routine and increasingly based on individual perceptions of what constitutes acceptable staffing. It is therefore unsurprising that clinicians are turning more frequently to software tools to support safe staffing decisions against live patient acuity.
With many senior nurses who once provided informal mentorship having retired or moved away from ward-level care, less experienced staff are increasingly left to make complex clinical judgements and prioritisation decisions under pressure. Evidence from the NMC on workforce leavers, including a marked rise in nurses leaving within the first decade of practice, alongside earlier-than-expected retirements, reflects what is now being seen in daily clinical practice.
We all need to listen to this workforce. They are asking for help in the only way they know how.
So where is the balance?
At one end of the debate lies a potential productivity opportunity of 7-13 per cent, driven by tighter grip and control of workforce availability. At the other end is recognition that existing baselines may no longer be fit for purpose, given rising patient acuity, expanding capacity requirements, and changing workforce skill profiles.
If current headroom assumptions are genuinely adequate, then action is needed to address the practices, culture and behaviours driving the escalating unavailability. Doing so could significantly improve predictability and consistency of service delivery. If, however, headroom is no longer sufficient, as the growing and consistent gap across UK services suggests, then establishments may need to be revised to reduce both the reliance on high-cost temporary staffing, and the skill variation that results from the mismatch between planned headroom and actual availability.
The reality is, there is truth in both perspectives. Rising levels of unavailability are not sustainable and, in some areas, are creating a self-perpetuating cycle of pressure on a less experienced workforce. They also contribute to an increasing variation in care delivery, and greater risks to patient safety. Yet simply increasing numbers to offset unavailability risks further expanding the proportion of lower-band, less experienced workforce.
Experienced mentorship is critical in developing a confident and resilient nursing workforce and this is where the system has begun to unravel.
Supporting a younger and less experienced workforce in the post-COVID environment requires a redefinition of leadership, from task management to nurturing capability, confidence, and resilience. Many providers are already on this journey, improving visibility and transparency of the workforce utilisation, while rebuilding mentorship, skills development and clinical supervision programmes to strengthen clinical confidence and decision-making.
In partnership, systems also need to consider smarter, intelligence-led, workforce planning approaches that balance technological innovation with respect for clinical expertise and professional judgement. Our future workforce needs support to anticipate patient needs, using data-driven planning and deployment tools to forecast demand and optimise predictable baseline staffing requirements.
Supporting the workforce at all levels to make the optimal decision for patient care and safety means providing timely prompts on predicted risk, alongside space for critical thinking and professional judgement when determining additional staffing requirements. This kind of support offers assurances and guidance, particularly for less experienced nurses who are increasingly required to take these decisions.
We may be seeing a shift towards a more inexperienced nursing workforce in the UK, but graduates also bring enthusiasm, adaptability and innovation. It is our collective responsibility to listen to them, nurture and support them and, most importantly, ensure their voices are included in shaping future workforce strategy and reform.
