When medical treatment doesn’t go the way you expect, it’s natural to wonder what can be done to right this wrong.
Common questions patients ask after experiencing poor NHS treatment include:
- Am I making a complaint because I’m unhappy or because I’ve suffered harm?
- What can an NHS complaint achieve?
- Can I make an NHS complaint and a medical negligence claim at the same time?
- When does poor NHS treatment become medical negligence?
This guide outlines the difference between complaints and clinical negligence claims. It also explains the outcomes each process can deliver and how to recognise when poor treatment crosses the line into negligence.
Am I making a complaint because I’m unhappy with the service, or because I’ve suffered harm?
This is often the most important question to ask yourself.
Many NHS complaints arise because people feel they haven’t been listened to or their concerns haven’t been properly addressed—and the volume of complaints doesn’t seem to be slowing down.
In 2024-25, the NHS received 256,777 written complaints, an increase of 6.1% (14,855) from the previous year.
You might be unhappy with the treatment you received from the NHS for multiple reasons, such as:
- Appointments were repeatedly cancelled
- You struggled to get an answer from staff
- Concerns raised by you or your family were ignored
- Communication about your treatment was poor
These concerns can be frustrating and upsetting, particularly when you’re dealing with health problems.
However, medical negligence claims focus on a different issue.
Instead of voicing dissatisfaction with the NHS, a claim focuses on whether substandard medical treatment caused you avoidable harm. For example, a delayed diagnosis could allow your condition to worsen.
Some patients begin by seeking answers, only to realise their concerns go beyond the NHS complaints process. Just last year, the NHS received more than 14,000 clinical negligence claims.
Here’s how you can tell the difference between a complaint and a claim:
| NHS complaint | Medical negligence claim |
| You’re dissatisfied with service quality | You’ve been injured or your health has worsened |
| You want answers, apologies, or service improvements | You want financial compensation |
| Free process through the NHS complaints procedure | Legal action that will involve solicitors |
| Focuses on what went wrong | Requires proof that negligence caused harm |
What can an NHS complaint achieve?
The NHS complaints procedure allows patients and their families to air concerns about the care they received. An NHS complaint can give you:
- An explanation of what happened
- An investigation into your concerns
- An apology where appropriate
- Encourage changes to protocols or practices
The complaints process focuses on learning and stopping future problems. You’ll receive a written response explaining what happened and what actions the NHS will take. This might include staff retraining, policy updates, or new safety procedures.
For many, answers and steps to improve processes are enough. Understanding why something happened can provide the reassurance you need to restore your confidence in the healthcare system.
However, there is one important limitation:
An NHS complaint cannot award compensation for injuries, financial losses, or the long-term consequences of negligent treatment.
Can I make an NHS complaint and a medical negligence claim at the same time?
Yes. Many people assume they have to choose between making a complaint and pursuing a claim, but both processes are entirely separate and can run in parallel.
Some patients choose to make a complaint first because they want an explanation or apology. Others contact a clinical negligence solicitor immediately because they’re worried about the impact of their injury or the time limits for bringing a claim.
A lawyer can investigate your case regardless of whether a formal complaint has been made.
When does poor NHS treatment become medical negligence?
Not every poor NHS experience amounts to medical negligence.
Healthcare professionals work in challenging circumstances, and sometimes treatment may not achieve the outcome everyone hoped for, despite providing appropriate care.
To receive compensation, you’ll need to show both ‘breach of duty of care’ and ‘causation’ have taken place. This means the treatment you received fell below acceptable NHS standards and directly caused you harm that could have been avoided.
My diagnosis was delayed
A delayed diagnosis can have serious consequences, especially when early treatment can be the difference between a full recovery and lifelong effects. This may involve conditions such as cancer, sepsis, stroke, or heart disease.
If your condition worsened because opportunities for earlier investigation or treatment were missed, you may be able to make an NHS negligence claim. The key question is whether a reasonable doctor would have ordered tests or referred you to a specialist sooner.
You also need to show that the delay caused additional harm. If your prognosis would’ve been the same with earlier diagnosis, you cannot claim compensation.
My symptoms weren’t properly investigated
Many medical negligence claims involve patients who repeatedly attended appointments or sought help for ongoing symptoms but were not appropriately referred, tested, or investigated.
Examples include a doctor who fails to order blood tests when you present with specific symptoms, or a hospital that loses your test results and never follows up.
For a clinical negligence claim to be successful, you need to prove that a proper investigation would have identified your condition and prevented harm.
I was sent home and became seriously unwell
Some patients are reassured that their symptoms are minor, only to discover later that they were suffering from a serious underlying condition. This can happen in GP surgeries, hospital wards, or A&E departments.
If your condition deteriorated significantly after discharge, it may be appropriate to investigate whether any warning signs were overlooked. This type of situation is not uncommon, and is one of the reasons why emergency medicine attracted the most NHS negligence claims in 2024/25.
Treatment mistakes cause further harm
Surgical errors, medication mistakes, treatment failures, and negligent aftercare can sometimes leave patients worse off than they would otherwise be.
Surgical errors might include operating on the wrong body part, leaving instruments inside you, or causing nerve damage due to careless technique. In these situations, the key question is whether the harm could have been avoided if appropriate care had been provided.
The above scenarios — delayed diagnosis, failure to investigate symptoms, being wrongly discharged, or suffering harm from treatment mistakes — are not just reasons to be unhappy with the service you received; they are clear examples of potential clinical negligence.
If you have experienced anything similar, it’s important not to treat it as a routine NHS complaint. These are circumstances where your care has fallen below the standard you’re entitled to expect, and you may have grounds for an NHS negligence claim.
Speak to a medical negligence lawyer about your NHS complaints
Talking to a solicitor who specialises in NHS negligence claims is an essential step if you believe you received substandard care.
During your initial consultation, you’ll share your experience with one of our legal professionals. They will ask questions to understand the negligence you endured and assess whether your claim is viable.
At Friends Legal, we offer a free initial consultation and work on a no-win, no-fee basis.
Contact us today to discuss your case.
