The Mental Treatment Act 1927 (18 Geo. V No. 13) allowed people in the general population with ‘mental disorders’ to be admitted to mental health institutions without the stigma of being certified as insane, but to be subsequently sent to a hospital for the insane involuntarily if they had not ‘recovered’ within six months.
The Mental Treatment Act 1927 extended the provisions of the Mental Treatment Act 1917, to the general population, including people under the age of 21 years.
Page five of the Act shows the information that was required from a doctor to admit a voluntary patient to a mental health institution.