Essentially, each health organisation will be run as a seperate organisation unrelated to the others. So taking over a given GP surgery will grant no influence over the hospital, the hospital will grant no influence over the PCT and so on.
Further bear in mind that the NHS is very very observed. While a doctor's surgery can take a huge amount of decisions, anything that cuts into patient care too heavily is going to get picked up quickly and inspectors will be there shortly after.
Further bear in mind that the NHS is very very observed. While a doctor's surgery can take a huge amount of decisions, anything that cuts into patient care too heavily is going to get picked up quickly and inspectors will be there shortly after.