I think the problem is poor training, discipline, attention to detail, and overall empathy and care for the individual patients.
Having years of experience of the NHS, just once myself in hospital for one nights observation after a car crash but years of visiting, day in, day out relatives and friends who were patients, some of which died due to the poor care they received in hospital.
I can see many people are to blame from the politicans not pushing standards to the suits running the hospitals down to the bed side nurse.
Having witness bedside care alot I can comment mostly on the nurses flaws and that would be,
1) Poorly trained with lack of attention to detail - they dont seem to know what they are doing most the time I have seen them squirt drugs and liquid food all up the walls and give patients not only the wrong drugs but administered it in the wrong way. They have also failed to check on patients regulary enough and attach equipment to allow monitoring of vitals from nurse bay resulting in death of young person in the night not to be discovered dead until next morning by family member.
2) Lack of empathy and care, quite often I get the impression the nurses just dont care at all for the patients, if they die they die kind of attitude, and they give the impression any help they give is too much and you feel you can't ask for anything because their too busy and they just sigh loudly at you, everythings too much trouble. Also if you complain about anything or see other people being mistreated you are threatened to keep quiet. At the end of the day they might hold your life in their hands as a general rule your encouraged to shut up, be quiet and dont complain. Not really a good atmosphere for a hospital where you have to get better.