Revalidation is a mechanism used to "affirm or establish the continuing competence" of health practitioners, whilst strengthening and facilitating ethical and professional "commitment to reducing errors, adhering to best practice and improving quality of care." Medical practitioners, nurses and midwives practicing in the UK are subject to revalidation to prove their skills are up-to-date and they remain fit to practise medicine. It is intended to reassure patients, employers and other professionals, and to contribute to improving patient care and safety.