ISAS is a patient-focused accreditation scheme that ensures patients consistently receive high quality services, delivered by competent staff working in safe environments. Supported by NHS England and recognised by the CQC, ISAS accreditation gives confidence to patients, commissioners and staff about safety, effectiveness and sustainability. Assessment for accreditation is against the ISAS Standard, a quality enhancing standard based on clinical and patient reported performance measures. The Royal College of Radiologists and the College of Radiographers have appointed UKAS, the national accreditation body, to undertake assessments for the ISAS scheme, which is available to public and private organisations across the UK.