(1)Where—
(a)the detention of a patient in hospital is authorised by—
(i)a short-term detention certificate; or
(ii)an extension certificate; and
(b)before the expiry of the period of detention so authorised, an application is made under section 63 of this Act,
the measures mentioned in subsection (2) below are authorised.
(2)Those measures are—
(a)the detention in hospital of the patient for the period of 5 days beginning with the expiry of the period for which the certificate authorises the detention of the patient in hospital; and
(b)the giving to the patient, in accordance with Part 16 of this Act, of medical treatment.
(3)In reckoning the period of days mentioned in subsection (2)(a) above, there shall be left out of account any day which is not a working day.
(4)In this section “working day” has the meaning given by section 47(8) of this Act.