This essay opens a series of MMG thought pieces bringing facts and argument to the questions that should shape long-term healthcare strategy. Taking a global perspective, we will examine healthcare systems across different parts of the world, comparing what works, what works less well, and why. The aim is to encourage constructive and informed public debate about how healthcare is organised, funded and delivered, beginning with a fundamental question: why do NHS waiting lists exist?
The NHS has more money, more technology and a workforce larger than many cities. Yet millions still wait for treatment, sometimes while pain deepens and independence disappears. Why does a service with such substantial resources struggle to provide timely care?
Waiting lists build when the number of people needing treatment exceeds the number the system can assess and treat. But that arithmetic conceals the real question: why is usable capacity insufficient? The answer runs across the NHS, from funding and workforce planning to blocked beds, lost training, ageing equipment and information systems that cannot communicate. These problems reinforce one another. An extra surgeon cannot operate without an anaesthetist, a theatre team and a bed; an extra scanner cannot produce a diagnosis without staff to operate it and interpret the images.
Most of the operational figures below concern England, which has its own NHS waiting-list standards and reporting system. UK-wide evidence is identified separately. The central problem is how resources are converted into completed treatment, and how much capacity is lost along the way.
Resources are substantial but demand keeps rising
NHS England’s waiting list stood at approximately 7.4 million treatment pathways in August 2026. Only 65.2% were within 18 weeks, against the national standard of 92%. That standard was last achieved nationally in February 2016. The problem therefore is structural and predates the pandemic, although the pandemic added substantially to it.
The NHS nevertheless delivered a record 4.7 million planned treatments, procedures and appointments during June to August. Staff are delivering considerable activity. But high activity does not necessarily mean enough completed treatment to absorb demand and clear the accumulated backlog.
Nor has spending stood still. NHS England reported average annual real-terms funding growth of approximately 3.5% between 2019/20 and 2025/26, including exceptional pandemic funding. The Office for National Statistics separately reports that UK government-financed healthcare spending was 19.7% higher in real terms in 2024 than in 2019.
These measures cover different budgets, but both challenge an explanation based solely on an absence of additional money. Emergency pandemic expenditure did not all create lasting capacity. Pay, medicines, greater clinical complexity and past underinvestment also absorb resources. Additional funding matters, but its effect depends on what it buys and whether the rest of the system can use it.
Demand is increasing too. The UK population reached an estimated 69.5 million in mid-2025, following growth of 4.7 million between 2014 and 2024. England’s population aged 65 and over increased by 2% in the latest year. Across the UK, those aged 85 and over are projected to increase from 1.75 million in 2024 to 3.6 million by 2049.
Older patients often need treatment for several conditions, more extensive assessment and longer recovery. The NHS must reduce its backlog while meeting the continuing needs of a larger, older population. A budget can grow while still failing to purchase enough additional treatment capacity to keep pace.
Workforce planning fails across recruitment training and retention
The scale of NHS employment is extraordinary. In July 2026, NHS trusts and other core organisations in England employed 1,535,043 people, equivalent to approximately 1.37 million full-time posts. That excludes primary care and the NHS elsewhere in the UK. The headcount is almost as large as Amazon’s entire worldwide workforce of 1.576 million and approximately three-quarters of Walmart’s 2.1 million global employees.
But total headcount says little about whether the right skills are available in the right place. England’s NHS recorded 100,326 vacancies in June 2026, including 23,046 across nursing, midwifery and health visiting, and 9,390 medical vacancies. These figures improved over the preceding year, and temporary staff cover some gaps. Nevertheless, a very large organisation can still lack the particular specialist or team needed to deliver treatment.
Anaesthesia illustrates the consequences. The Royal College of Anaesthetists identifies a UK shortfall of 2,256 consultant and specialty doctors in anaesthesia, approximately 16% below need. Some 43% of clinical leaders reported surgery postponed daily or weekly because anaesthetic staff were unavailable. The College estimates that the shortage prevents up to 1.5 million operations and procedures annually.
Applicants exist: in 2025, there were 6,770 applications for 539 core anaesthetic training places. Applications are not necessarily unique applicants, but the figures expose the mismatch between demand for training and funded opportunities. Medical-school expansion alone cannot produce specialists. Graduates need postgraduate places, experienced supervisors and a route into specialist employment.
The British Medical Association currently calls for a pause in medical-school expansion until postgraduate opportunities and educational capacity are adequate. That position deserves scrutiny, but government, not the BMA, sets publicly funded medical-school numbers. The planning responsibility extends beyond admitting students to ensuring that the full training pipeline can accommodate them.
Practical training is also being lost. In March 2025, surgical leaders reported more than three million lost hands-on training opportunities since March 2020. Moving NHS-funded operations into the private sector can reduce immediate waits, but training must follow the work. The Royal College of Surgeons and Association of Surgeons in Training highlighted the shift in hip and knee surgery and reported that only 17% of arthroscopy cases involved a resident doctor. The latest surgical census found only 10% of core trainees and 7% of higher trainees gained operating experience outside the NHS in the preceding year.
Buying treatment without protecting training risks weakening future capacity. So does recruiting doctors without retaining them. The GMC’s 2025 Barometer survey found that 15% of doctors said practising abroad was their most likely career change over the following year, up from 12% in 2024. This measures intentions, not departures, but it is a warning about the attractiveness of UK medical careers. Separately, 4,880 internationally trained doctors left UK practice in 2024, 26% more than the previous year.
Deployment creates further contradictions. England had 29,400 full-time-equivalent fully qualified GPs in September 2026, 3.1% more than a year earlier. Yet patients struggle to obtain appointments while some qualified GPs struggle to secure sufficient work. Practice funding, employment arrangements and geography can prevent available expertise from meeting obvious demand. Workforce planning must address employment and deployment as well as recruitment.
Operational bottlenecks and failures consume capacity
A hospital’s capacity is limited by the resources that must be available together. Safe surgery requires experienced scrub nurses, operating department practitioners and recovery staff alongside surgeons and anaesthetists. The surgeons’ census found that 53% of surgical consultants identified theatre access as a major constraint. Employing another surgeon does little if the theatre cannot be staffed or the patient cannot be accommodated afterwards.
England’s adult acute beds averaged 94.9% occupancy in September 2026. Approximately 13,647 patients daily remained in hospital despite being medically fit for discharge. Without suitable community support and care arrangements, beds remain occupied. Emergency admissions then compete with planned surgery for scarce space. A failure outside the operating theatre can therefore prevent an operation from taking place inside it.
Cancellations show the effect. In January–March 2026, NHS providers in England cancelled 23,056 operations at the last minute for non-clinical reasons; 5,040 affected patients were not treated within 28 days. These figures exclude earlier cancellations. Separately, hospitals cancelled 9.26% of outpatient appointments in 2025/26, roughly 14 million appointments. These are different measures and should not be added together, but both reveal substantial disruption to planned care.
Industrial action adds another pressure. Consultants in England plan strikes on 25 and 26 November, providing Christmas Day levels of cover, although negotiations could still prevent the walkout. NHS England recorded 1,486,258 hospital appointments postponed during industrial action between December 2022 and July 2024, encompassing strikes by doctors and other staff. Resident doctors’ strikes subsequently postponed another 54,095 procedures and appointments in July 2025 and 38,961 in November 2025.
The financial consequences also reduce the resources available for other purposes. In April 2026, the Government estimated that resident doctors’ strikes since 2023 had cost approximately £3 billion. Strikes do not explain a waiting-time standard missed since 2016, but they disrupt activity in a system already struggling to recover.
Equipment and buildings impose further limits. Government comparisons report 9.9 CT scanners and 8.6 MRI units per million people in 2023, the lowest levels among comparator countries, although the UK figures exclude machines outside hospitals. In England, 17% of CT and MRI scanners were over ten years old in March 2024. England’s £17.3 billion maintenance backlog adds another obstacle.
Buying machines is insufficient without radiographers to operate them and radiologists to interpret the images. The UK has an estimated 32% consultant radiologist shortfall. Diagnosis can therefore be delayed by equipment, staffing, premises or several simultaneously. Investment in one element leaves the bottleneck intact if the others remain inadequate.
Safety failures also create avoidable demand. NHS England’s provisional figures for 2025/26 identify 403 incidents meeting its “Never Event” definition, including 166 wrong-site surgical events, 121 retained foreign objects after procedures and 50 wrong implants or prostheses. These figures cover reported NHS-funded care, including some independent providers. They concern serious failures that established safeguards are intended to prevent.
Hospital-onset infection adds to the burden. England recorded 7,360 hospital-onset cases of Clostridioides difficile infection in 2025/26. Its hospital-onset rate fell by 12%, an important improvement, while the hospital-onset MRSA bloodstream infection rate increased by 9.8%. These measures do not establish that every infection was preventable. But preventable infections and complications can require additional treatment, occupy beds and divert staff from other patients. Better safety is part of increasing usable capacity.
Recovery services matter for the same reason. An August physiotherapy survey found 79% of respondents concerned about insufficient staffing and 65% reporting inadequate rehabilitation equipment. An operation does not remove the need for subsequent care. Underproviding rehabilitation and community support leaves another part of the system unable to absorb the work passed to it.
Technology and disconnected data waste clinical time
Patients see one NHS. Behind it sit separate organisations, budgets, management teams and information systems. At this scale, coordination is essential. When records cannot move reliably between organisations, staff repeat assessments, chase information and spend time reconstructing work already done elsewhere.
A BMA estimate submitted to Parliament in 2022 put doctors’ time lost to inadequate IT at more than 13.5 million hours annually, equivalent to almost 8,000 full-time doctors. It is an older survey-based estimate, not a current measurement, but it illustrates how poor technology can absorb substantial clinical capacity.
Newer evidence shows why installing electronic records is only part of the task. NHS organisations reported in 2025 that 93% of providers used electronic patient records, yet only 30% had fully integrated two-way data flows. A Health Foundation survey found that 70% of staff respondents regularly used more than one electronic patient-record system; only 49% had received training tailored to their role.
Trusts have historically had considerable autonomy over their systems, subject to national standards. Local choice can accommodate different needs, but incompatible implementation adds work at organisational boundaries. Digital records deliver limited benefit if clinicians still cannot obtain the information they need when they need it.
The NHS App demonstrates both progress and the gap beneath it. September 2026 figures record 39.3 million registered users and 16.7 million distinct monthly users, with 7.8 million repeat prescriptions ordered. Yet in April, NHS England said only 64% of hospital appointments were visible through the app. NHS guidance acknowledges that waiting lists may not appear if providers have not supplied information, and not all waiting times are available. The usefulness of the interface depends on the completeness and reliability of the data behind it.
Paper communication adds further administration. An NHS England case study cites 158 million letters annually, typically using second-class post. In April 2026, ministers confirmed that no national data were held on whether appointment letters arrived before appointments. Paper remains essential for some people, but a system must still establish that its communications arrive in time and make confirming, cancelling and rescheduling straightforward.
The record of major technology programmes also demands scrutiny. The National Audit Office described the NHS’s 2002–2011 national IT programme as expensive and largely unsuccessful. A later review recorded projected lifetime costs of £9.8 billion, alongside substantial uncertainty over benefits. Some national services survived successfully, but the comprehensive transformation was not delivered.
The Federated Data Platform now faces its own test. Palantir’s consortium contract is approximately £330 million over seven years. Official figures put the wider programme’s projected lifetime cost at approximately £1.08 billion, with forecast benefits of £808 million. The billion-pound figure is a programme projection, rather than money already paid to Palantir.
The Health Foundation found no noticeable improvement in delayed discharges associated with adopting the platform’s OPTICA tool. In July, MPs recommended seeking an alternative, questioning efficacy and public trust. NHS England defends the programme, and government project monitoring rates delivery green. Those positions do not establish that every component has failed or succeeded. They make independent measurement essential: deployment and expenditure are not evidence that more treatment is being delivered.
Execution and accountability determine whether queues shrink
Waiting lists persist because rising demand meets a system whose usable capacity is constrained at multiple points. Workforce numbers conceal shortages of particular skills. Training places do not always match future staffing needs. Recruitment is undermined by departures. Operations depend on theatre teams, beds and diagnostics that may not be available together. Discharge depends on services beyond the hospital. Poor information and preventable failures add further work.
These problems compound one another. A delayed scan can hold up a treatment decision; an unavailable anaesthetist can leave theatre time unused; a blocked bed can force a cancellation. Measuring each department’s activity separately cannot establish whether the NHS as a whole is completing enough treatment to reduce the queue.
That is the execution problem. Funding decisions need to cover the full set of resources required to deliver additional care. Workforce plans need to connect recruitment with postgraduate training, employment and retention. Technology programmes need to demonstrate reductions in wasted time and delays. Hospital planning needs to account for rehabilitation, community capacity and discharge, rather than assuming that those services will absorb whatever demand arrives.
Accountability must follow the same logic. More appointments, more staff, new equipment and another digital system can all be useful. The decisive questions are whether they increase completed treatment, reduce avoidable cancellations and shorten waits. When those results do not follow, managers and policymakers need to identify the remaining constraint and change the allocation or execution accordingly.
Additional funding alone cannot guarantee shorter waits. The NHS must convert its resources into reliable treatment capacity faster than demand and the existing backlog consume it. Until its staffing, facilities, information and management work together to achieve that, the queues will persist.
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