No organisation but the NHS would treat its staff this way: you are being exploited because these people are completely cynical. It makes me angry to think of someone who gives as much of yourself as you do being used like this and if it weren't for people like you the whole thing would just fall apart. Can you imagine a civil service bureaucrat working 14 nights in a row on an LAS salary? If I were in England I would drive to Newham right now and hug you.