This guidance sets out Ofsted’s approach to setting conditions of registration for providers and managers of social work services. Providers of social work services contract with a local authority to provide delegated local authority functions regarding children looked after and/or care leavers. Any provider or manager of social work services must register with Ofsted as an agency/manager under the Care Standards Act 2000. It is an offence to provide or manage a social work service without registration. Ofsted is the registration authority under the Care Standards Act 2000, therefore providers and managers are legally obligated to register with Ofsted.