5.—(1) This paragraph applies where immediately before the appointed day a patient is detained in hospital in pursuance of an application for admission under section 12 of the 1961 Act but a report under section 19 of that Act has not been made in respect of him.N.I.
(2) The patient may be detained in hospital for a period not exceeding 21 days beginning with the day on which he was admitted to hospital.
(3) This Order (except Articles 4 to 11) shall apply to the patient as if for the reference in Article 12(1) to the period for which a patient is detained for assessment by virtue of Article 9(8) there were substituted a reference to the period for which the patient is detained by virtue of sub-paragraph (2).