The state of the NHS is always a very prominent topic in the news, in particular NHS waiting lists and the elective backlog, therefore it’s increasingly important to be aware of this for your upcoming medical school interviews.
In this handy guide, we will break down everything you need to know about the NHS Waiting List Crisis and Elective Care Backlog; including the current state of the NHS, what effect this is having on patients, the causes behind it and the use of private healthcare services.
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NHS backlog and waiting list summary: what do I need to know?
The NHS waiting list peaked at a record 7.77 million pathways (around 6.5 million individual patients) in September 2023. It has since fallen to roughly 7.1 to 7.4 million pathways by early 2026, its lowest level in almost three years, but remains far above pre-pandemic levels.
The largest patient backlog is for elective care services
In your interview, you should focus on showing that you understand the concepts you're talking about, rather than just memorising and repeating statistics. This article will help you gain that understanding.
As of early 2026, around 7.1 to 7.4 million treatment pathways are on the NHS waiting list in England, equating to roughly 6.2 to 6.5 million individual patients (some people wait on more than one pathway). The list peaked at 7.77 million pathways in September 2023 and is now slowly falling.
What are NHS waiting lists, and who is on them?
The NHS Waiting List is a virtual queue of patients waiting for treatment from the NHS. NHS waiting lists are specific to the speciality that patients have been referred to.
A patient’s position on the waiting list will depend on their clinical priority, allocated by healthcare professionals.
This waiting list includes:
patients whose referrals have been made but not yet processed by a speciality.
patients waiting for an appointment after their referral to a specialty
patients who are waiting for their treatments to be started or arranged following an appointment
patients who have had appointments and procedures cancelled or delayed
The NHS Waiting Lists are split into elective and urgent lists.
The speciality with the largest NHS waiting list is trauma and orthopaedics, which includes elective patients waiting for surgery such as hip and knee replacements. Other high-volume waits include ophthalmology, ear, nose and throat (ENT), gynaecology and dermatology.
In 2023, one in eight people are on an NHS waiting list in the UK. This equates to over 7.5 million people.
Elective Care - What Is It?
This might be a question which medical school interviewers use to gauge your understanding of NHS waiting lists, so it’s really important that you understand what elective care is, and who these patients are.
Elective care describes treatment which is planned in advance, as opposed to emergency treatment. It includes operations, appointments or investigations which are not urgent or time-sensitive, therefore patients are entered onto a waiting list until the resources become available to complete the procedure.
The aim of elective care is usually to improve a patient's quality of life, such as in cataract surgery, and identify medical issues earlier to allow for early intervention. Early intervention at the first signs of illness is known to improve patient’s long-term outcomes.
One aspect of elective care is routine care, which is usually delivered in the primary care setting, such as in GP appointments. Routine care provided by the NHS is care which is regular and preventative.
Routine care includes screening for diseases, annual checkups, vaccinations and chronic disease follow-ups. It aims to prevent, identify and address illness early in order to improve patient outcomes.
Medicine Interview Question - What are some examples of elective care in the NHS?
Examples of elective care available within the NHS include:
Hip Replacements- improve patient’s quality of life through improved mobility and reduced pain and discomfort
Cataract Surgery- improve patient’s quality of life through improvement to visual impairment
Bariatric Surgery - helps patients struggling with obesity to lose weight, which may reduce other health burdens secondary to obesity.
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Urgent Care in the NHS describes services which treat patients with acute health problems which are not life-threatening. These patients require care sooner than can be provided through routine or elective care, due to fear of deterioration or complications.
These include patients who present with serious infections, acute injuries, mental health crises and exacerbations of chronic conditions.
👉🏻 Read more: NHS Core Values
NHS Referral To Treatment Waiting Times: The Maximum Recommended Wait Times For Referrals
The Referral To Treatment (RTT) waiting time a patient experiences is the time taken between the receipt of a referral by the appropriate medical staff to the commencement of treatment or discharge if treatment is deemed unnecessary. This is the time that a patient is on an NHS waiting list.
There are a few exceptions to this recommendation:
If the patient is recommended to make changes before the treatment in order to improve outcomes (e.g. smoking cessation, weight loss)
Rearranged appointments by the patient prolong the waiting time for treatment.
Treatment is deemed unnecessary by a medical professional
The NHS Constitution sets the standard that at least 92% of patients should start treatment within 18 weeks of referral. This is a legally backed constitutional standard, but it has not been met across England since 2015.
For urgent treatment, the maximum wait time is 2 weeks. This is most notable in the suspected cancer “2-week wait” pathway.
What is the NHS backlog, and how big is the waiting list now?
Fundamentally, NHS waiting lists and the patient backlog exist because the NHS’s capacity to provide treatment is less than the demand from the population. As waiting lists increase, the patient backlog increases.
The backlog peaked at a record 7.77 million pathways in September 2023. As of early 2026 it has fallen to around 7.1 to 7.4 million, helped by the NHS delivering a record level of elective activity (around 18.4 million treatments and operations in 2025), though clearing it fully is still expected to take years.
The increasing patient backlog has led to waiting times increasing, particularly in low-urgency and low-priority areas, such as trauma and orthopaedics.
As of March 2026, around 65% of patients started treatment within 18 weeks of referral. This met the government's interim milestone of 65% but is still well below the 92% constitutional standard, which the NHS aims to restore by 2029.
The cancer standards changed in October 2023 (see below). Under the current 28-day Faster Diagnosis Standard, patients should receive a diagnosis or have cancer ruled out within 28 days of referral, with a target of 80% as of 2026.
On the 62-day standard (from urgent referral to first treatment), performance was around 72% in late 2025, short of the 85% target. The National Cancer Plan for England, published in February 2026, aims to meet all cancer waiting-time standards by 2029.
Cancer Care Rule Changes - No More Two Week Wait (2WW) Pathway
The NHS changed its rules on how quickly cancer patients should be seen, diagnosed, and treated, starting October 1st 2023. This is to make the system less confusing for patients and focus on what matters most - getting people treated faster.
Previously there were 10 different waiting time rules the NHS must follow - this was very complex to manage!
The main changes were:
Scrapping the 2-week wait standard. This old standard stated patients with suspected cancer must see a specialist within 2 weeks of being referred by their GP. But now we have faster ways to diagnose cancer without needing in-person appointments first.
Instead, the focus is on a new 28-day Faster Diagnosis Standard - patients should get a cancer diagnosis or all-clear within 28 days from their first appointment. This looks at the full journey from first concerns to diagnosis.
For treatment, there will be one simplified 62-day standard from referral to starting treatment, instead of multiple targets for different cancers. The aim is to treat 85% of patients within 62 days.
Once diagnosed, 96% of patients should begin treatment within 31 days. This ensures treatment is started quickly.
This should improve outcomes for patients. As a future doctor, understanding NHS cancer waiting time targets will be useful for your medical school interviews when asked about the NHS.
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What causes the NHS backlog and long waiting lists?
In your UK Medical School Interviews, you might be asked: why are the NHS Waiting Lists so long? You should make it clear in your answer that there are a number of factors which led to the NHS backlog developing, and why it will take years to be cleared.
Overstretched service
Pre-pandemic, NHS waiting lists were already increasing, attributable to years of mounting pressures on an overstretched and under-resourced system. With decreasing NHS bed numbers, insufficient funding, outdated technology, and building maintenance backlogs, the NHS faces an ever-exceeding demand, with a decreasing capacity.
This long-running decline was set out in detail by Lord Darzi's independent investigation of the NHS, which found the service in a critical condition after years of underinvestment and rising demand. It is well worth reading before your interview.
This exceeding demand for healthcare services stems from the ageing population of the UK, with more patients requiring specialist treatment for their complex needs.
Demand is also driven by winter pressures: every year, flu, respiratory illness and cold weather push emergency admissions up and force hospitals to cancel planned operations. To see how this collides with the backlog, read our guide to the NHS winter and flu crisis.
Although the NHS workforce is increasing in size, this is inadequate for the demand and service provision required. Vacancy rates are high, and many posts are filled by expensive bank and agency staff.
The workforce crisis is argued to be a retention problem, with staff leaving for a better work-life balance or as a result of health issues. Decreasing NHS staff satisfaction may have a role to play in this, owed to pay cuts and worsening working conditions.
In response to the COVID-19 pandemic, there was a strategic redirection of staff and cancellation of elective and routine care. This allowed prioritisation of patients of higher medical concern and reduced infection spread from unessential or time-limited contact. This caused NHS wait lists to increase massively.
Additionally, since the pandemic, some parts of the NHS haven’t returned to full capacity. For instance, there remains to be decreased elective care activity, which may contribute towards the increasing backlog.
NHS Strikes
Industrial action has repeatedly disrupted the backlog: the 2023 to 2024 strikes by resident doctors (formerly called junior doctors) led to large numbers of operations and outpatient appointments being rescheduled, with a greater impact than the nursing or ambulance strikes. Pay disputes and further strike action by resident doctors have continued into 2025 and 2026, again setting back elective recovery.
Some argue the strike impact is modest relative to the overall size of the waiting list, and that the backlog is driven far more by long-running underfunding, workforce shortages and rising demand than by any single cause.
The NHS Hidden Backlog forms the unknown proportion of patients who haven’t presented to their GP for referral, perhaps due to fear of putting strain on services, or due to the pandemic.
The scale of this burden is unknown, and patients in this category tend to present with later-stage, more aggressive disease, which would have benefited from earlier presentation and assessment for treatment.
How is the NHS backlog affecting patients?
It is well documented that the long delays for treatment have a significant impact on patients from both a physical and mental health perspective.
Worsened Condition: The longer a patient stays on an NHS waitlist, the greater the risk of their condition deteriorating. This will cause further suffering for the patient, and increase the complexity and cost of treatment required.
Delayed Diagnosis: Increased waiting times for diagnostic testing causes a delay in the patient being diagnosed. For some disease processes, this means that early intervention treatments may have been missed, and the patient’s prognosis can worsen.
Stress: Waiting for diagnosis or treatment can cause increased levels of stress and anxiety for the patient. If the patient is unable to work during this time, there may be an added financial burden.
Reduced Quality of Life: For elective surgeries in particular, patients may suffer from decreased quality of life in the time waiting for their treatment, such as from pain or discomfort.
An increasingly common internet search is “How to jump the NHS waiting list”, as patients are desperate to receive treatment. Some patients transfer to different hospitals with shorter waiting lists in order to benefit from sooner treatment availability.
These both point to the desperation of UK residents for timely medical treatment. It further widens the health inequality between different socioeconomic groups - those who can afford to ‘skip the queue’, and those who cannot.
NHS backlog solutions: how is the government tackling waiting lists?
The 2025 10-Year Health Plan and the "three shifts"
If you want a strong, current answer, the single most useful thing to mention is the government's 10-Year Health Plan for England, "Fit for the Future", published in July 2025. It builds on the Elective Reform Plan from January 2025 and is structured around three big "shifts" that examiners increasingly expect applicants to recognise:
From hospital to community: moving more care into neighbourhood settings, GP surgeries and community diagnostic centres so patients are treated closer to home and hospitals are freed up for the most complex cases.
From analogue to digital: making far greater use of the NHS App, electronic records and data so patients can book, choose and track their care, and so capacity is used more efficiently.
From sickness to prevention: focusing on stopping illness before it starts (for example obesity, smoking and early diagnosis) to reduce the future demand that drives the backlog in the first place.
The headline pledge is to restore the NHS constitutional standard of 92% of patients starting treatment within 18 weeks by 2029, with an interim milestone of 65% by March 2026, which was met. In my GP clinics I see the everyday reality behind these targets: patients waiting months for routine surgery while their pain, mobility and mental health all worsen. A good answer links the policy to that human impact.
The government published an Elective Reform Plan in January 2025, followed by the 10-Year Health Plan ("Fit for the Future") in July 2025. Together these aim to restore the 92% 18-week standard by 2029. Key measures include:
Increased resources, including dedicated surgical hubs, community diagnostic centres, expanded use of the NHS App for booking and choice, and greater use of the independent sector to add capacity.
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How to answer a medicine interview question on NHS waiting lists
Sample question: "How would you reduce NHS waiting lists?"
This is one of the most common phrasings, and interviewers are not looking for a magic fix. They want to see that you understand the problem is multifactorial and that you can weigh up realistic, balanced solutions. When I interview applicants, the strongest answers are structured rather than a list of buzzwords. A clear framework is supply, demand and efficiency:
Increase supply (capacity): more staff and better retention, dedicated surgical hubs that protect planned operations from emergency pressures, community diagnostic centres for faster scans and tests, and carefully managed use of the independent sector.
Reduce demand: prevention and earlier intervention (tackling obesity, smoking and the ageing population's complex needs), better long-term condition management in primary care, and reducing unnecessary referrals.
Improve efficiency: digital booking through the NHS App, validating waiting lists so they are accurate, prioritising by clinical need, and using data to direct resources where they are needed most.
Then add nuance: acknowledge there is no single solution, that funding and workforce constraints are real, and that any solution must be fair so it does not widen the gap between those who can pay privately and those who cannot. Linking your answer to the four pillars of medical ethics, particularly justice (fair access) and non-maleficence (the harm of delay), shows maturity.
NHS Waiting lists are a large and controversial topic within the healthcare news. In light of the NHS worker’s strikes, the NHS backlog is often used as an argument against industrial action.
This makes it a relevant topic for your UK Medical School Interviewers to ask you about.
When answering an interview question on NHS waiting lists, there are a number of topics you could try to address:
Patient Frustration and NHS Reality - NHS waiting lists are an unfortunate reality that doctors and healthcare staff have to face. Patients may be angry, frustrated and feel let down from having waited so long for appointments. You must be able to show empathy for these patients,
Physical and Mental Impact of Waiting Lists- you need to express your understanding of the toll that waiting lists can have on patients. Again, it’s vital that you show compassion when talking about patients, the adverse outcomes from NHS Waiting Lists and the effects of the NHS backlog.
The NHS Backlog cannot be attributed to a single cause - you should demonstrate your understanding of the platitude of reasons behind the NHS Backlog, and how these have all compacted to create the current crisis.
There is no simple solution - given the multifactorial cause for the Backlog, there is no single change which can significantly reduce the waiting lists. Government initiatives have been made to combat this, but have been unsuccessful at meeting their targets.
More NHS Waiting Lists Medicine Interview Question Examples:
Explain what the NHS waiting lists are, and why do they exist?
What is the difference between elective and urgent care in the context of NHS services?
What are the maximum recommended wait times for NHS referrals, and why are these timeframes important?
Could you elaborate on the concept of the "NHS backlog"? Why has it become a significant issue?
What factors have contributed to the development of the NHS backlog, and why is it expected to take years to clear?
How has the COVID-19 pandemic impacted NHS waiting lists and the backlog?
(Hard, not common) What is the hidden backlog in the NHS, and why is it a concern?
(Hard, not common) What effects do long delays in NHS treatment have on patients, both physically and mentally?
Why do some patients seek private healthcare or transfer to hospitals with shorter waiting lists, and what ethical considerations might arise from this trend?
To what extent does private healthcare provide a two tier system in the UK?
(Hard) What do you know about other healthcare systems in the world and how they differ from the UK's?
What steps do you think can be taken to address the NHS waiting list crisis and reduce the backlog?
The NHS backlog is the queue of patients waiting for planned (elective) hospital care, such as operations, scans and outpatient appointments. It exists because demand for NHS care is greater than the capacity available to deliver it, so patients are placed on a waiting list until resources free up.
What does backlog mean in a medical context?
In medicine, a backlog means the accumulated number of patients waiting longer than they should for assessment, diagnosis or treatment. It usually refers to elective (non-emergency) care, where referrals build up faster than they can be cleared.
How big is the NHS waiting list now?
As of early 2026, the waiting list in England stands at around 7.1 to 7.4 million treatment pathways, equating to roughly 6.2 to 6.5 million individual patients. This is down from the record peak of 7.77 million pathways in September 2023 and is the lowest level in almost three years.
Why are NHS waiting lists so long?
There is no single cause. The main drivers are years of underfunding and limited capacity, chronic workforce shortages, an ageing population with more complex needs, the lasting impact of COVID-19, and disruption from industrial action. These factors have combined so that demand consistently outstrips capacity.
What are the causes of NHS waiting lists in the UK?
Key causes are an overstretched and under-resourced system (fewer beds, ageing buildings, outdated technology), staff shortages and poor retention, rising demand from an ageing population, the backlog created when elective care was paused during the pandemic, and the impact of NHS strikes.
How can the NHS reduce waiting lists?
Solutions fall into three areas: increasing capacity (more staff, surgical hubs, community diagnostic centres and use of the independent sector), reducing demand through prevention and earlier intervention, and improving efficiency with the NHS App, accurate list validation and clinical prioritisation. There is no single fix, so a balanced mix is needed.
How is the government tackling the NHS elective backlog?
Through the Elective Reform Plan (January 2025) and the 10-Year Health Plan, "Fit for the Future" (July 2025). These focus on three shifts (hospital to community, analogue to digital, and sickness to prevention) and pledge to restore the 92% 18-week standard by 2029, with an interim 65% milestone for March 2026 that was met.
What are the three shifts in the 2025 10-Year Health Plan?
The three shifts are: from hospital to community (care closer to home), from analogue to digital (more use of the NHS App and data), and from sickness to prevention (stopping illness before it starts). They are the backbone of the government's plan to make the NHS sustainable and cut waiting lists.
What is the 18-week NHS waiting time standard?
The NHS Constitution sets the standard that at least 92% of patients should start treatment within 18 weeks of referral (the referral-to-treatment, or RTT, standard). It is a legally backed constitutional standard, but it has not been met across England since 2015.
Is the NHS meeting the 18-week target?
No. As of March 2026, around 65% of patients started treatment within 18 weeks, against the 92% standard. This met the government's interim milestone of 65% but shows there is still a long way to go before the constitutional standard is restored, which is targeted for 2029.
What is referral to treatment (RTT) time?
RTT is the time from when a hospital receives a referral to when treatment begins (or the patient is discharged if treatment is not needed). It is how the NHS measures elective waiting times, with a standard that 92% of patients should be treated within 18 weeks.
What is the difference between elective and urgent care?
Elective care is planned, non-urgent treatment such as hip replacements or cataract surgery, where patients wait until resources are available. Urgent care treats acute problems that are not life-threatening but need attention sooner than routine care, such as serious infections or acute injuries.
What is the NHS hidden backlog?
The hidden backlog is the unknown number of patients who have not yet come forward for referral, often because of the pandemic or a reluctance to add to NHS pressure. These patients tend to present later with more advanced disease, which can worsen outcomes and add to future demand.
What happened to the two-week wait (2WW) cancer pathway?
The two-week wait standard was scrapped in October 2023 and replaced by the 28-day Faster Diagnosis Standard, under which patients should get a diagnosis or all-clear within 28 days of an urgent referral (target 80%). Treatment is governed by a 62-day standard (target 85%) and a 31-day standard once diagnosed.
How does the NHS backlog affect patients?
Long waits can cause conditions to deteriorate, delay diagnosis and worsen prognosis, cause significant stress, anxiety and financial strain, and reduce quality of life through ongoing pain or disability. These harms are central to why interviewers ask about the topic, so show empathy in your answer.
How should I answer an interview question on NHS waiting lists?
Show that you understand the problem is multifactorial, give up-to-date figures (around 7.1 to 7.4 million in 2026, down from a 7.77 million peak), discuss realistic solutions across supply, demand and efficiency, and acknowledge there is no single fix. Show empathy for waiting patients and link to ethics, especially fair access (justice) and the harm of delay (non-maleficence).
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