What Type Of Ownership Is British Heart Foundation?

The Charity was founded in 1961 by a group of medical professionals
who were concerned about the increasing death rate from cardiovascular
disease.
It is a major funder and authority in cardiovascular research,
education and care, and relies predominantly on voluntary donations to
meet its aims. In order to increase income and maximise the impact of
its work, it also works with other organisations to combat premature
death and disability from cardiovascular disease.
en.wikipedia.org