“See a GP if you have symptoms of lung cancer, such as breathlessness or a persistent cough,” said the NHS.
“The GP will ask about your general health and your symptoms.
“They may examine you and ask you to breathe into a device called a spirometer, which measures how much air you breathe in and out.
“You may be asked to have a blood test to rule out some of the possible causes of your symptoms, such as a chest infection.”