This was at its worse at night, and frequently woke me up in the early hours when I had to stand up
or sit upright to breathe.
There was no release of phlegm
attached to these symptoms.
So I visited my local Doctor (General Practitioner - GP) who - based on my age, smoking history (equivalent to 50+ pack years), symptoms, and physical examination - suspected Chronic Obstructive Pulmonary Disease and probably caused by Emphysema brought on by smoking. I have no history of Bronchitis or Asthma.