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Finally Seen · Patient rights

Independent · Not NHS

Do GPs have to follow NHS guidelines?

1. 01NHS clinical guidelines (NG / CG / QS) aren't strictly laws, but GPs are professionally expected to follow them, or document why not.
2. 02Technology appraisals on specific drugs and devices are legally enforceable on NHS commissioners within 3 months.
3. 03An unexplained departure from a guideline that causes harm is real evidence in a complaint or negligence claim.
4. 04The biggest upgrade you can make to a written request: name the guideline (e.g. NG87), quote the recommendation, give the date.
5. 05Once it's in writing and on the record, the GP has to engage, verbal asks leave no trace.

Source: GMC Good Medical Practice (2024) · NHS Constitution for England · finallyseen.org.uk/guides

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Short answer

No, NHS guidelines clinical guidelines are not laws in the way that, say, the Road Traffic Act is a law. But that doesn't mean a GP can ignore them with impunity. Three things bind GPs in practice:

• The General Medical Council's Good Medical Practice (2024), every doctor's professional code.
• The NHS Constitution for England, patient rights, including the right to expect NHS-recommended treatments.
• The common law of clinical negligence, the standard of a reasonably competent GP, which in 2026 includes following NHS guidelines unless there's a clinical reason not to.

Together those produce a clear professional expectation: follow the NHS guidelines, or document a clinical reason for departing from it.

What the GMC requires

The General Medical Council's Good Medical Practice (2024) requires doctors to "provide a good standard of practice and care", "keep your professional knowledge and skills up to date", and "recognise and work within the limits of your competence". Domain 1 also requires doctors to "follow our more detailed guidance" and recognised national clinical guidelines, which in practice means NHS guidelines in England, SIGN in Scotland.

A GP who ignores a relevant NHS guideline without recording a reason is not automatically in breach of GMP, but they have made it considerably easier for a complaint or claim to argue that they were.

What the NHS Constitution gives you

The NHS Constitution for England gives every NHS patient the right to:

• Expect drugs and treatments recommended by NHS guidelines in a technology appraisal, where clinically appropriate.
• Receive care that reflects national clinical standards and guidance.
• Be involved in decisions about their care.

This is not abstract: it's the language an Ombudsman or ICB complaints reviewer will quote back at a practice that ignored NHS guidelines without explaining why.

Technology appraisals are different

The NHS guidelines come in two main kinds of clinical recommendation:

• Clinical guidelines (NG / CG / QS / CKS), evidence-based recommendations on whole pathways. Strongly expected, not legally enforceable.
• Technology appraisals (TAs), recommendations on specific drugs and devices. NHS England commissioners are legally obliged under the NHS Constitution to fund a positive NHS Technology Appraisal within 3 months of publication.

So if a GP is refusing to prescribe a drug that a NHS Technology Appraisal has recommended for your condition, the question moves from "professional expectation" to "legal funding obligation on the ICB".

When can a GP legitimately depart from the NHS guidelines?

The NHS guidelines themselves are explicit that they are recommendations, not directives. A GP can depart from them when:

• The patient's individual clinical circumstances make the recommendation unsafe or inappropriate.
• The patient (after a proper conversation about risks and benefits) chooses a different option.
• A newer or higher-quality piece of evidence has emerged that NHS guidelines has not yet incorporated.

In all three cases, the GP is expected to record the reason in the medical notes. "We don't do that here" is not a reason.

If a GP ignores NHS guidelines without a reason

• Ask in writing which NHS guideline applies and why the GP has departed from it.
• Request that both the question and the answer go into your medical record.
• Raise it with the practice manager if the answer is missing, vague, or doesn't actually engage with the guideline.
• Consider a Stage 1 NHS complaint, see our complaints guide.
• Keep the paperwork. If you later need to bring a negligence claim, an unexplained departure from the NHS guidelines that caused harm is exactly the kind of evidence solicitors look for.

How to cite NHS guidelines in a letter to your GP

The single biggest upgrade you can make to a written request is to cite the specific NHS guideline by number, quote the relevant recommendation, and give the date of publication. Compare:

Compare these two ways of asking for the same thing, the second is your wording, not a NHS guidelines quote, but it cites the right guideline:

• "I think I should be referred for ADHD", easy to deflect.
• "Under NHS guideline NG87 (Attention deficit hyperactivity disorder: diagnosis and management, 2018, updated 2019), I am writing to formally request referral for adult ADHD assessment in line with the guideline's recommendations on recognition and referral of adults with suspected ADHD", much harder to ignore, and adds the question to the medical record in a documented form. (The wording in italics is what you write; NG87 itself is at nice.org.uk/guidance/ng87.)

If you don't want to learn the guideline numbers yourself, that's exactly what our formal letter does, it retrieves the relevant NHS guidelines for your specific symptoms, quotes the recommendations faithfully, and adds it to your medical record as a written request for a reply within 28 days. If your GP ignores it, the Stage 1 ICB complaint in your pack must be acknowledged within 3 working days by law (NHS Complaints Regulations 2009).

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