The Care Quality Commission (CQC) is the independent regulator of health and social care services in England. Simply put, it sets standards for the quality and safety of care and inspects and rates services based on these standards.
Rehab facilities in the UK are required to register with the CQC and adhere to their regulations to ensure that they are providing safe and effective care to their patients; the CQC also publishes inspection reports and ratings of rehab facilities to help patients and their families make informed decisions about their care.