The NHS Lung Cancer Screening Programme has been a real success — more than 10,600 lung cancers found since 2019, over three-quarters at an early, treatable stage. But screening is offered only to smokers and former smokers aged 55 to 74. If you have never smoked, are under 55 or over 74, or smoked too little to qualify, you fall outside it — and lung cancer in people who have never smoked is rising, now around 10–15% of cases, often in younger people. A normal chest X-ray does not rule lung cancer out. If you have symptoms that will not settle, the right next step is a proper look, not reassurance. Dr Lawrence Okiror, Consultant Thoracic and Robotic Surgeon (GMC 6150382), reviews patients personally at London Bridge Hospital, typically within 2–3 working days, and arranges a CT scan quickly where it is needed. Self-referrals welcome.
Last reviewed: May 2026 · Dr Lawrence Okiror FRCS(CTh) FRCSEd(CTh) · GMC 6150382
More than 10,600 lung cancers found since 2019, over three-quarters at stage 1 or 2 (NHS England, May 2026). But the programme covers only smokers and former smokers aged 55–74.
Around 10–15% of lung cancers occur in people who have never smoked — more often younger, more often women. If counted alone, it would be the 8th most common cause of cancer death in the UK.
About 1 in 5 chest X-rays in people later diagnosed with lung cancer were reported normal in the year before diagnosis. Persistent symptoms still deserve a CT scan.
Two things can return a reassuring result and still be wrong. A screening eligibility rule is built around the average high-risk person — an older, long-term smoker. A chest X-ray is a quick, low-cost first look. Both are designed for populations, not for you specifically. Their reassuring answer is a statement about probability, not a guarantee about your lungs.
That is why “you are not eligible for screening” and “your X-ray looks normal” should never, on their own, close the door on symptoms that will not settle. The corrective is not another population-level test — it is individual judgement: a CT scan and a specialist who looks at your situation rather than your category. If a symptom persists without a clear explanation, persistence is the finding. Dr Okiror reviews patients personally at London Bridge Hospital, typically within 2–3 working days, and arranges a CT scan quickly where it is warranted. Self-referrals welcome.
The NHS Lung Cancer Screening Programme invites people aged 55 to 74 who smoke or used to smoke and who meet a calculated risk threshold. It is one of the most effective cancer programmes the NHS has run. But it is aimed deliberately at the highest-risk group — and four groups of people sit outside it.
Being outside the screening programme does not mean you are safe. It means there is no scan looking for a problem before symptoms appear — so when symptoms do appear, they are the warning, and they are worth listening to.
Smoking remains by far the biggest cause of lung cancer — about eight in ten cases. But as smoking has declined, the proportion of lung cancers in people who have never smoked has grown, and these cancers behave as a somewhat distinct disease. They are more common in women, tend to occur at a younger age, and are usually a type called adenocarcinoma, which often grows in the outer parts of the lung.
Several factors are linked to lung cancer in people who have never smoked: air pollution — particularly fine particles known as PM2.5; second-hand smoke; radon, a naturally occurring radioactive gas; certain occupational exposures, including asbestos; and a family history of lung cancer. Many of these cancers are driven by specific genetic changes in the tumour — such as EGFR or ALK alterations — which also open the door to targeted treatments. Often, though, no single cause can be identified; the changes that lead to cancer can occur in lung cells by chance, as they can anywhere in the body.
The practical message is simpler than the biology. You do not need to have done anything, or to fit a particular profile, to develop lung cancer. That is why the older idea of lung cancer as purely a smoker’s disease is misleading — and why symptoms in a non-smoker should be taken just as seriously. More on lung cancer in people who have never smoked, including genetic testing and targeted treatment →
A chest X-ray is usually the first test a GP arranges when someone has symptoms that might suggest a lung problem. It is quick, widely available, and a sensible place to start. But it has a real limitation that is not always made clear: a normal chest X-ray does not rule lung cancer out.
A large UK study found that around one in five — about 23% — of chest X-rays done in general practice for people who turned out to have lung cancer were reported as normal within the year before their diagnosis. X-rays are two-dimensional; small cancers, or cancers hidden behind the heart, the diaphragm or the ribs, can be invisible on them.
This is not a hypothetical concern. A national NHS patient-safety investigation into lung cancers missed on chest X-ray in primary care was prompted by the experience of a person who had never smoked and was just 49, whose diagnosis was delayed by several months after a normal X-ray. These are the patients who are reassured, sent away, and later diagnosed at a more advanced stage — the stories that reach the newspapers.
The lesson is not that chest X-rays are useless — they are valuable. It is that a normal X-ray, in someone whose symptoms will not settle, is a reason to ask what next, not a reason to stop. The next test is usually a CT scan, which is far more sensitive and can show small cancers an X-ray cannot.
If you have symptoms that persist — whatever your age or smoking history — these are the things worth knowing and acting on.
A cough lasting more than three weeks, or a change in a long-standing cough; new or worsening breathlessness; coughing up blood, even once; persistent chest, shoulder or back pain; unexplained weight loss or tiredness; and chest infections that keep returning. In non-smokers these can be milder — which is part of why they are missed.
It is reasonable to ask your GP: “My symptoms have not settled and the X-ray was normal — should I have a CT scan?” National guidance supports considering a CT scan, a repeat X-ray, or specialist referral when symptoms persist despite a normal X-ray. Asking the question is not being difficult; it is good safety-netting.
Note when the symptoms started, whether they are getting worse, and what has already been tried — antibiotics, inhalers, an X-ray. A clear timeline makes it easier for any doctor to judge whether further investigation is warranted, and harder for a persistent problem to be treated as a series of unconnected episodes.
If NHS waiting times feel too long for your level of concern, a private specialist appointment and CT scan can usually be arranged within days. The aim is a clear answer quickly — in most cases reassurance, and where it is needed, an early diagnosis when treatment works best.
There are two routes — the NHS and private. It is worth knowing both, honestly.
Through the NHS
Your GP can refer you on an urgent suspected-cancer pathway, request a direct-access CT scan where local services allow, or use a non-specific-symptom pathway for vague symptoms that do not fit one box. These routes exist and are the right first port of call for most people. The limitation is time: waiting varies by area, and the median reported nationally from chest X-ray to CT scan has been around 53 days. For many people that is acceptable; for some, with persistent symptoms and real anxiety, it is a long time to wait.
Privately, within days
A private chest CT scan can usually be arranged within days. Dr Lawrence Okiror sees patients at London Bridge Hospital and The Lister Hospital Chelsea, with outpatient clinics also at Canary Wharf and the City of London — typically within 2–3 working days of contact. He reviews the imaging personally, explains clearly what the scan shows, and where a scan finds something that needs further assessment, the next steps happen under one consultant rather than a series of separate referrals.
In the great majority of cases the result is reassurance. Where it is not, finding a lung cancer early — when it is small and treatable — is exactly what changes the outcome. If a scan shows a shadow →
For the symptomatic patient who is not eligible for screening — the non-smoker, the under-55, the over-74, the light former smoker — and in whom a normal chest X-ray has not resolved the concern.
10-second summary
Persistent symptoms + normal CXR + outside screening eligibility = consider CT, not reassurance. A normal chest X-ray does not exclude lung cancer (NICE NG12). For a fast private chest CT and personal specialist review, refer to Jo Mitchelson: 020 7952 2882 · pa@lungsurgeon.co.uk. Seen within 2–3 working days; clinic letter to you within 2 working days.
NICE NG12 is explicit that a normal chest X-ray does not exclude lung cancer, and that a repeat X-ray, direct-access CT, or referral should be considered where symptoms persist. Referral guidance is weighted towards smoking history, which can leave the non-smoker with vague symptoms relying on clinical judgement rather than a clear pathway — precisely the patient who benefits from a low referral threshold.
A private chest CT within days rather than a median of around 53, personal review of the imaging by a consultant thoracic surgeon, and — should the CT show a nodule or other finding — a single, integrated pathway from assessment to diagnosis to surgery under one consultant. Your patient does not bounce between services. You receive a clinic letter electronically within 2 working days.
If the CT identifies a pulmonary nodule, the dedicated referral pathway and BTS thresholds are set out here: Your patient has a lung nodule — when to refer →
Most private patients are seen within 2–3 working days of contacting the practice. Self-referrals welcome — you do not need a GP letter to book, though if you have one it is helpful. Bring any chest X-ray report or images, a list of your symptoms and when they began, and details of anything already tried. Dr Okiror reviews everything personally at the first appointment and arranges a CT scan promptly where it is warranted.
Book a consultation → · Request a second opinion → · Information for referring clinicians →
Questions most commonly asked by people who have symptoms that will not settle but do not fit the typical lung cancer picture — because of their age, or because they have never smoked.
Book a Consultation →Or call Jo Mitchelson:
020 7952 2882
Self-referrals welcome. Private appointments at London Bridge Hospital within 2–3 working days, with a CT scan arranged quickly where it is needed. Bring any X-ray report and a note of your symptoms. Dr Okiror reviews everything personally and gives a clear, honest assessment.
Jo Mitchelson, PA · 020 7952 2882 · pa@lungsurgeon.co.uk
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