Seventy six-year-old Barry is on the cardiac ward, waiting for a double bypass - but a shortage of beds means his operation has already been cancelled twice in two weeks. Cardiac surgeon Betsy Evans is hoping it will be third time lucky today as she prepares to take him into theatre. Others hoping their operations will go ahead are 57-year-old Dawn, who is having a cancerous tumour removed from her brain, and 15-year-old Jack, who has waited more than a year to correct his curved spine.