Relax...They are only Little People, called "Subjects", and there is nothing they can do about the National Health, except to pay for it.
Much as I love visitng the place, I would rather be a sick dog at Angell Memorial Vetinary Hospital here, than a kidney patient there.
I took my cat there in Massachusetts, and he received very good care indeed. I would agree.
FYI, this testing was carried out by an American owned private drug company, nothing to do with the NHS, apart from the NHS hospital that saved their lives.