I'll start: my mum would have died five years before I was born if it hadn't been for the NHS. She contracted a rare virus and was in hospital for months, just a couple of years after the NHS was set up. Her parents would never have been able to afford the private fees.
I have a disability and got free treatment for it on the NHS. I would never have been able to afford the treatment I needed privately. My brother would have died of pneumonia at six weeks.
Anyone else?