The supply of health care in the UK is an important economic, social and political issue. Demand for health care treatments grows year by year as the population expands, ages and as incomes rise. For millions of people private health care is regarded as a necessity even though the NHS provides a vast range of services free at the point of use. Treatments such as cosmetic surgery, hand surgery, laser eye treatment, physiotherapy, weight loss services and hip and knee replacements are offered by a range of private sector providers in addition to state health care facilities.