Usually, people in the UK prefer the NHS instead of going to private hospitals. People nowadays do not actually invest on health care simply because they also have other necessities that must be fulfilled aside from hospitalization and medicine. But, you need to be aware that they are different from each other in a lot of ways. People who have been in a private hospital can probably tell the differences of the two types of hospitals.
For government hospitals, you do not have to pay for a lot except for the prescribed medications that you will have to buy. In contrast, a private hospital usually provides medical care together with an equal value in money. It means that for every medical care that they provide their patients, there is usually an equal price. This is the only visible advantage of government hospitals over private health providers. People who can afford private health providers consider them instead of government hospitals.
The choosing starts when you already entered both the two types of hospitals. If you will notice, there is a long line of patients who are waiting to be treated inside an NHS hospital. Only expect to be prioritized if you are in a critical condition. If you are not in a critical condition and you entered an NHS, you will not be prioritized by the management. Wasting time is another story for patients so they consider waiting as a disadvantage. Another thing is that patients tend to wait for long hours before the doctor can attend to them. You have no choice but to wait since there are also other patients on the hospital.
These kinds of situations do not happen inside a private health facility.