The question is never just whether the diagnosis was missed. It is whether catching it sooner would have changed the outcome.
Claim failed
[2026] EWHC 704 (KB)·2026·Liability decided at trial
During long spinal surgery for scoliosis and chest wall deformity the claimant deteriorated, arrested while being turned over, and was left with severe sight loss. He alleged the anaesthetist negligently failed to treat a raised potassium reading, but the judge found that reading was spurious and the arrest was caused by a pulmonary embolism, so the claim failed.
Even after a devastating complication a claim fails if the court finds the true cause was a non-negligent event, so proving the mechanism of injury is often the decisive issue.
Claimant succeeded£811,247
[2026] EWHC 657 (KB)·2026·Damages assessed at trial
The trust admitted it negligently failed to diagnose Daisy Lynch's developmental hip dysplasia at birth, so it was not picked up until she was three, by which time simple non-surgical treatment was no longer possible. She went through repeated hip operations and a total hip replacement at 22, and the court assessed her damages after an eight-day trial.
Even where liability is admitted, damages can be heavily contested, and the court can add a provisional damages order letting the claimant return for more if a specified complication later occurs. The award covered pain and suffering, lost earnings, future care and future surgery.
Claim failed
[2025] EWHC 3402 (KB)·2025·Liability decided at trial
The claimant alleged the registrar at the Princess of Wales Hospital, Bridgend, delayed delivery after a pathological CTG in a labour complicated by pre-eclampsia and an impacted fetal head. The judge found the plan of fetal blood sampling, attempted forceps and then caesarean met the standards of the day and dismissed the claim.
A poor outcome after a difficult delivery is not enough; the claimant must show specific decisions fell below acceptable practice at the time and that earlier action would have avoided the injury. The material contribution argument does not help if no negligent cause of delay is proved.
Claim failed
[2025] EWHC 2025 (KB)·2025·Liability decided at trial
The claimant developed anal stenosis after a private haemorrhoidectomy and argued her haemorrhoids had been over-graded, non-surgical options were not discussed and the stenosis risk was not explained. The judge found the grading was correct, alternatives were discussed and the risk was disclosed on the consent form and in the information leaflet, so the claim was dismissed.
Documented consent, including a signed form and a written leaflet naming the specific complication, can be decisive in defeating a Montgomery consent claim.
Claim failed
[2025] EWHC 1907 (KB)·2025·Liability decided at trial
A 27-year-old flight attendant saw her GP with severe back and leg pain, having mentioned perianal numbness in a message two days earlier; she had emergency surgery for cauda equina syndrome four days after the consultation. The judge accepted that the GP asked the right red-flag questions and that the patient answered no, so there was no breach of duty.
In cauda equina cases the court looks closely at what safety-netting questions the GP actually asked and what the patient answered on the day. Contemporaneous notes and messages matter greatly for both sides.
Claimant succeeded
[2025] EWHC 1261 (KB)·2025·Liability decided at trial
Ms Hodgson saw a locum GP who suspected pelvic inflammatory disease but did not examine her or arrange urgent follow-up, and a second GP reviewing her blood results by telephone did not refer her for examination. The delay in treatment led to an abscess, removal of a fallopian tube and chronic pelvic pain.
When a GP suspects a serious infection, the court expects an examination or urgent referral to rule it out, and a telephone review of test results does not replace that. Both GPs were held liable, with damages to be decided separately.
Mixed outcome
[2024] EWHC 3318 (KB)·2024·Liability decided at trial
After spinal surgery the hospital failed to give Ms Tuffin the prescribed anti-clotting injection, and she developed a deep vein thrombosis and post-thrombotic syndrome; three years later her leg was amputated above the knee. The judge held the trust liable for the DVT and its after-effects but found the amputation was caused by complex regional pain syndrome from the surgery itself, not the clot.
A missed dose of thromboprophylaxis that causes a DVT is negligent, but compensation covers only the harm the clot actually caused. Where a separate condition drives the worst outcome, the claimant must show the negligence at least materially contributed to it.
Claimant succeeded
[2024] EWHC 2809 (KB)·2024·Damages assessed at trial
A GP saw Ms Cullen three times over five weeks with a persistent cough, sore throat and tiredness but did not make an urgent cancer referral; her laryngeal cancer was diagnosed at stage III about three months later. Liability was admitted, and the trial dealt with disputed care costs and the defendant's allegation that she had been fundamentally dishonest, which the judge rejected.
A delayed cancer referral claim turns on what extra treatment the delay caused; here the admitted delay meant chemotherapy, a total laryngectomy and neck dissections that earlier diagnosis would have avoided. Social media posts relied on to allege dishonesty were found not to contradict her evidence.
Claim failed
[2024] EWHC 2338 (KB)·2024·Liability decided at trial
Admitted with perforated diverticulitis, the claimant had a laparoscopic washout and deteriorated about 36 hours later, needing an emergency Hartmann's procedure with a stoma and intensive care. She alleged she had asked for a colorectal referral, was improperly moved to private care and was not properly consented, but the judge found none of this proved and dismissed the claims against both the surgeon and the trust.
Consent disputes turn on evidence of what was actually discussed; where the records and the surgeon's account show the alternative procedure was explained, a claim based on inadequate consent is likely to fail.
Claim failed
[2024] EWHC 2011 (KB)·2024·Liability decided at trial
Ms Spellman alleged a hospital radiologist missed cauda equina compression on an MRI scan taken the day after her fall, delaying diagnosis until private surgery six days later. Damages had been agreed at £300,000 if she won, but the judge found the scan showed only mild stenosis with no compression to be found, so the claim failed.
Parties sometimes agree the damages figure in advance and fight only liability, so a claimant who loses on breach of duty recovers nothing. Expert evidence on what the scan actually showed was decisive.
Claim failed
[2024] EWHC 1800 (KB)·2024·Liability decided at trial
A widower claimed that doctors at Southampton General misdiagnosed his wife's rare cerebral venous thrombosis as a stroke, gave her clot-busting drugs and delayed the correct treatment, leading to her death. The judge found the clinicians acted reasonably on the presentation and that even earlier correct treatment would probably not have saved her.
A tragic outcome after a rare condition is missed does not by itself prove negligence; the question is whether a reasonable body of doctors would have acted the same way on the information available. Causation must be proved separately.
Settlement approved£5.56M
[2024] EWHC 25 (KB)·2024·Settlement approved by the court
The baby's shoulders became stuck during delivery and manoeuvres failed, so she was deprived of oxygen and left with cerebral palsy; the Trust admitted in 2012 that it failed to deliver her with sufficient or safe speed. The court approved a settlement of about £5.56m plus lifelong periodical payments.
Shoulder dystocia claims are not only about arm injuries; a prolonged delay in freeing the baby can cause brain injury, and damages then reflect lifelong care needs. Approval judgments like this are one of the few public sources showing what such settlements are worth.
Claim failed
[2024] UKSC 1·2024·Appeal decision
Three families sought damages for psychiatric injury after watching a relative die from a condition that doctors had negligently failed to diagnose. The Supreme Court (Lord Burrows dissenting) held that doctors do not owe relatives a duty to protect them from the shock of witnessing a patient's death or medical crisis.
Relatives who develop a psychiatric illness from witnessing a loved one's death caused by medical negligence generally cannot claim as secondary victims. Their remedies are limited to the Fatal Accidents Act dependency and bereavement claims.
Claim failed
[2023] EWHC 3163 (KB)·2023·Liability decided at trial
Ms Beatty, in hospital with severe cellulitis, developed ischaemic toes; a vascular surgeon diagnosed vasculitis rather than an embolism and did not order a CT angiogram, and she later needed a below-knee amputation. The judge found the surgeon's diagnosis was supported by a responsible body of medical opinion and dismissed the claim.
A diagnosis that turns out to be wrong is not automatically negligent; if a responsible body of specialists would have reached the same view on the information available, the claim fails under the Bolam test.
Settlement approved£9.3M
[2023] EWHC 1547 (KB)·2023·Settlement approved by the court
A low-birth-weight baby was not fed adequately overnight and his blood sugar was not checked early enough, causing hypoglycaemic brain damage; the Trust admitted liability in 2018. The court approved a £9.3m lump sum plus periodical payments and held the Trust also owed interest for accepting the offer late.
Negligence in the first days of a newborn's life, not just during labour, can produce some of the largest clinical negligence awards. If a defendant accepts a Part 36 offer late, interest for the delay can be claimed on top.
Claim failed
[2023] EWHC 156 (KB)·2023·Liability decided at trial
A three-year-old was diagnosed with tonsillitis by a GP registrar, deteriorated over the next two days and was then referred to hospital, where meningococcal meningitis was diagnosed. The court found no causative breach of duty and dismissed the claim.
Meningitis claims against GPs often fail because early symptoms genuinely resemble common childhood infections; the claimant must show both that the GP fell below a reasonable standard and that earlier referral would have changed the outcome.
Claimant succeeded
[2023] EWHC 19 (KB)·2023·Liability decided at trial
The mother of twins asked for a caesarean during labour and was refused; the second twin was delivered 6.5 minutes later than she should have been and suffered damaging oxygen deprivation. Ritchie J found the Trust negligent for the delay and held that without it the whole of her brain injury would have been avoided.
A delay of only a few minutes in delivery can be negligent and can be enough to cause the entire injury. A mother's reasonable request for a caesarean during labour should be properly considered and explained, not simply refused.
Claimant succeeded£4.68M
[2022] EWHC 2417 (KB)·2022·Damages assessed at trial
A 20-year-old motorcyclist with leg fractures developed compartment syndrome which the trust admitted it treated too late, so his right leg had to be amputated below the knee. Liability was admitted and the court assessed damages at £4,676,442 covering lifelong prosthetics, care, adapted housing and lost earnings.
Where a hospital admits that quicker treatment of compartment syndrome would have saved a limb, the case becomes about valuing lifelong needs, and prosthetics, accommodation and care can each run to six or seven figures for a young claimant.
Claim failed£1.4M
[2021] UKSC 21·2021·Appeal decision
A GP negligently failed to arrange proper testing, so a woman wrongly believed she did not carry the haemophilia gene and went on to have a son with haemophilia who also had autism. The Supreme Court held the GP was liable only for the haemophilia-related costs, because the purpose of the advice was to guard against that risk, not the unrelated risk of autism.
Damages are limited to losses falling within the scope of the duty the doctor undertook. Even where negligence clearly led to a child's birth, unrelated conditions that the advice was never meant to address are not recoverable.
Claimant succeeded
[2021] EWHC 169 (QB)·2021·Liability decided at trial
Mrs Davies was admitted to Wexham Park Hospital with pneumococcal meningitis; the trust admitted intravenous antibiotics should have started by 10.40 but were not given until 13.20, and she died two days later. After a causation trial the judge found she would probably have survived with timely antibiotics.
In sepsis and meningitis claims a delay of even a few hours in giving IV antibiotics can be negligent, and the key dispute is often whether the delay changed the outcome. Here the family succeeded, with damages already agreed.
Claimant succeeded£2.85M
[2020] EWHC 3269 (QB)·2020·Appeal decision
After a 10-hour facial reconstruction the claimant developed compartment syndrome in both legs in intensive care and was left with permanent damage; the trust settled 70 days before trial for a £2.85 million lump sum plus annual payments of £48,000 rising to £85,000. This later judgment dealt only with the lawyers' success fee and dismissed the claimant's appeal on that point.
Compartment syndrome arising from post-operative monitoring failures can attract multi-million-pound settlements with periodical payments for lifelong care, although this figure comes from a costs judgment rather than a damages judgment.
Claim failed
[2019] EWHC 1043 (QB)·2019·Liability decided at trial
A 4.93kg baby's shoulder became stuck at delivery and the registrar used moderate downward traction to free her, causing a permanent brachial plexus injury. The judge found that traction of that kind was accepted practice in 1992, even though it is now avoided, so the claim failed.
Negligence is judged by the standards at the time of the birth, not today's guidance, which is decisive in many historic Erb's palsy claims. An agreed damages figure is worth nothing unless breach of duty is proved.
Mixed outcome
[2019] EWHC 1276 (QB)·2019·Liability decided at trial
Mrs Arksey attended Addenbrooke's with a warning bleed from a brain aneurysm but was discharged without a CT scan and suffered a catastrophic re-bleed the next day. The court held she had not proved that admitting her would have avoided the re-bleed, though she succeeded on an admitted delay in fitting a shunt for hydrocephalus.
Proving breach of duty in A&E is only half the battle; the claimant must also show that the correct treatment would have prevented the injury in time, which failed here for the main allegation.
Claimant succeeded
[2018] UKSC 50·2018·Appeal decision
A man with a head injury was told by an A&E receptionist he would wait four to five hours, left after 19 minutes, and collapsed at home with a brain bleed. The Supreme Court held the hospital owed him a duty not to give misleading information about waiting times and that his leaving did not break the chain of causation.
An NHS trust's duty of care in A&E starts at the reception desk, and wrong information given by non-clinical staff can found a negligence claim.
Claim failed
[2018] EWHC 343 (QB)·2018·Liability decided at trial
Five days after surgery to reverse his ileostomy the 60-year-old claimant developed sepsis and his whole colon had to be removed because its blood supply had failed. He alleged the surgeon had damaged the marginal artery, but Yip J was not satisfied that the injury was caused by negligence rather than a naturally occurring clot.
A serious complication after bowel surgery is not itself proof of negligence; the claimant must show on the balance of probabilities that a surgical error, rather than an unavoidable event, caused the harm.
Claimant succeeded
[2016] UKPC 4·2016·Appeal decision
A patient with appendicitis waited hours for a CT scan and surgery; by the time his appendix was removed it had ruptured and sepsis had damaged his heart and lungs. The Privy Council held the hospital was liable because its delay materially contributed to the injury, even though some harm would have occurred anyway.
Where negligent delay makes an existing condition worse in a cumulative way, a claimant need not prove the whole injury would have been avoided, only that the delay made a more-than-negligible contribution. This is often relied on in sepsis and delayed-treatment claims.
Claim failed
[2013] EWHC 4088 (QB)·2013·Liability and damages decided at trial
A widower and four children claimed after Mrs Shah, who had collapsed with leg weakness days after giving birth, died from an undetected arterial tear. The court found the A&E doctor's failure to check leg pulses was not negligent and would not have changed the outcome, so the claim failed.
Fatal claims need proof both that care fell below a reasonable standard and that better care would probably have saved the patient. The judgment nonetheless shows how dependency damages for a spouse and children are built up from the deceased's earnings and services.