Mark Thomas is known as a comedian but this time around he is turning himself into a documentarian. By the time Mark reaches 84 (the average UK life expectancy) The NHS is going to be 100 years old. Mark has questions about what the NHS looks like now and what it will look like on its centenary. Mark has interviewed experts and done residencies in different medical fields, hospitals and surgeries. He’s here to tell us where our NHS is, where it is heading and where we should aim to be.