sorry but these answers are upto the patient to follow and he should follow after a visit to the NHS...i just advise what we might do here in pakistan...in the uk it is difficult or problematic to get referred to a consultant so unless one does not have monetary problems one has to go thru the NHS who are generally quite efficient...i would suggest that he visit NHS clinics and ask for a consultant...chest pain can originate in the heart arteries, valves, chest bones, lungs, chest and heart linings and sometimes acidity...!given the congestion he feels it could be chest lining or a heart problem or even just blood thickening...!please donot regard my answers as a diagnosis but just as something that you can talk to your doctor or NHS about