The 11× postcode lottery: why one NHS hip replacement waits 30 weeks and another 3

A patient in one part of England waits 30 weeks for a hip replacement. A patient down the road waits 3 weeks for the same operation under the same NHS, paid for by the same taxpayer.

That is not an exaggeration. It is what NHS England's own published data shows when you sort 538 trusts by the median wait for elective hip replacement, in 2026. The ratio between the slowest and the fastest is roughly 11×.

This article is about what that number means, where it comes from, and what you can do about it.

What the data says

NHS England publishes a single open dataset every month called RTT — short for Referral to Treatment. It tracks how long patients on each consultant pathway are waiting at each provider in England. The headline national figures from this dataset are what you read in the news: "7.5 million people on the waiting list", "the median wait is 14 weeks", and so on.

What the headline figures hide is the spread underneath them.

For elective hip replacement (the procedure that helped invent the modern NHS waiting list, when targets for it were first published in the early 2000s), the median time from GP referral to treatment varies from around 3 weeks at the fastest trust to roughly 30+ weeks at the slowest.

This is not a 10 % difference. It is not a 50 % difference. It is eleven times.

For elective knee replacement, the spread is similar. For NHS hysterectomy, it is closer to 9×. For some lower-volume specialties, the variation is even wider — but those carry more statistical noise, so we focus on the high-volume ones where the ratio is robust.

Why the variation exists

A long list of reasons, none of them comforting:

1. Workforce. Some trusts have a full complement of surgeons in a specialty; others have unfilled vacancies. A trust running with three orthopaedic surgeons instead of seven cannot run the lists it would in a fully staffed world.
2. Theatre capacity. Operating theatres are physical objects. A trust with five theatres available 5 days a week has more capacity than a trust with three.
3. Bed availability. Hip replacements need a recovery bed. Trusts with constrained beds — usually because medical admissions are absorbing them — postpone elective lists.
4. Backlog inheritance. A trust that took a bigger hit during the COVID years started 2024 with a longer list. Catching up takes years, not months.
5. Local commissioning decisions. ICBs (Integrated Care Boards) make procurement choices — some have contracted independent sector capacity to absorb demand, others haven't.
6. Data quality. RTT requires careful pathway validation. Trusts that validate well report accurately; trusts that don't have noisy figures both ways. (We flag this in our methodology.)

None of this is patients' fault. Almost none of it is GPs' fault. It is structural and largely invisible from any individual point in the system.

What you can do

You have a legal right under the NHS Constitution to choose the hospital you are referred to for most elective specialties. This is called Right to Choose.

It works like this:

• When your GP discusses a referral, you ask to be referred to a specific hospital — not just the local one.
• That hospital can be anywhere in England, not just in your ICB area.
• The hospital must accept you for the same NHS-funded treatment as your local one would.
• You can use waiting time as one of the criteria — and it is the criterion the NHS Constitution explicitly allows you to weigh.

In practice, three things often stop this from happening:

1. Patients don't know it exists. The right was introduced in 2008. Most patients have never been told about it.
2. GPs don't always offer it actively. Referral defaults to the local trust unless the patient explicitly asks otherwise.
3. Choosing requires data. Until recently, the data on which hospital is fastest was buried in NHS England's monthly publication — accessible to analysts, but not to a patient sitting in a GP appointment.

That third point is what HospitalWaits.co.uk is trying to fix. You search a specialty and a postcode. We show every NHS trust in England ranked by wait, with the distance from you. We auto-draft the Right-to-Choose letter you take to your GP.

What this article is not

It is not medical advice. Which trust is medically right for your case — including travel implications, surgeon match, and continuity of care — is a conversation for you and your GP. The data tells you who's fast. The clinical judgement is theirs.

It is also not a claim that any single number on the site is perfect. Median waits are aggregated, specialty-level, and lag the current month by a few weeks. Read our methodology for the honest version, including the known limitations flagged by working NHS consultants and RTT validators since launch.

Why we published this

Because the 11× number deserves to be common knowledge — and it isn't.

If you are waiting, or your parent or your patient or your friend is waiting, the data is there. Use it.

If you are a GP, a practice manager, or a Trust commissioner, the data is also there — and the patient activation it enables matters more than another article on the same official statistics.

— Mustafa