Cardiac Physiology Student Placement in Hull | University of Leeds 

In the uk, first you need a degree in cardiac physiology, or you can aquire a first class or 2:1 degree in biology/bio medicine. Then apply for the NHS STP course in cardiac physiology ( which is very competitive so you’ll need relevant work experience etc). After the NHS STP course your qualified to work as a cardiac physiologist

The UK also have apprenticeship routes into cardiac physiologist