The National Health Service (NHS) is the publicly funded national healthcare system for the United Kingdom. The idea of the National Health Service came about at the end of the Second World War, with the principles of being ‘comprehensive, universal and free at the point of delivery’. The NHS in England, NHS Scotland and NHS Wales offer a range of health services, the majority of which are free for people ordinarily resident in the United Kingdom. Across the UK, there are roughly 1.6 million people employed by the NHS, with the systems having a combined budget of £136.7 billion.