Applications for detention under civil sections of the England and Wales Mental Health Act 1983 require at least one recommendation from a registered medical practitioner who is approved under section 12 of the Act. The Mental Health Act 2007 introduced multi-professional approved clinicians who may act as a patient's responsible clinician with responsibilities that include renewal of detention for treatment. Approved clinicians who are medical practitioners are automatically approved for section 12 purposes, whereas other approved clinicians are not. It is argued in this paper that this inconsistency is illogical, has implications for patient care and needs to be remedied.