While at work in September 2014, I lost vision of my left eye and had terrible feeling of “heat” all over the left side of my body.

The ER ophthalmologist directed me to cardiology for a vascular problem.

A week later, I could not walk 100 meters (325 feet) without crushing chest pain and shortness of breath.

I was no longer functional. Making my bed was all I could do in a whole day. I was no longer an active 54-year-old.

I consider myself one of the lucky ones.

I was a runner, triathlete, skier, scuba diver, etc. before my problems got severe enough to seek medical help.

Most doctors took my health decline seriously from the start.

Later, it was not uncommon for doctors who were unaware of my athletic endeavours to assume my subsequent lack of fitness was the cause of my condition rather than the result.

My name is Arthur. I am a Scot but have lived in London for nearly forty years.

In 2014, I had my first heart attack. In the following six years, I went to A&E at least twice a year. Every time, I was sent home and was told it was reflux.

My own doctor in about 2015/16 put me on half an angina pill. When I was in hospital, I was told by the cardiology doctors that I did not need it as I never had angina at all.