(1) Subject to subsection (3) and (4) below, no person shall execute any controlled works unless—
(a) he is authorised in writing by the Secretary of State to do so and the works are in accordance with the terms of the authorisation; or
(b) the works are executed in accordance with planning permission in force in pursuance of the Town and Country Planning Act 1971 or the Town and Country Planning (Scotland) Act 1972 and granted (otherwise than by a development order within the meaning of that Act) either before the passing of this Act or in consequence of an application for such permission which was made before 12th April 1976.
(2) In this Part of this Act—
“ controlled works ” means—
works for the construction of controlled premises or of a controlled extension of controlled premises; or
works for converting any premises into controlled premises;
“ hospital premises ” means premises at which there are or are to be facilities for the provision of hospital services;
“ hospital services ” means all or any of the following services, namely—
(a) the carrying out of surgical procedures under general anaesthesia;
(b) obstetrics;
(c) radiotherapy;
(d) haemodialysis or peritoneal dialysis;
(e) pathology or diagnostic radiology;
“ relevant hospital premises ” means hospital premises occupied otherwise than by or on behalf of the Crown or for the purposes of a visiting force.
“ controlled premises ” means hospital premises which provide or will provide beds for the use of patients, being hospital premises—
in the case of which the number of beds which are or will be so provided is one hundred and twenty or more; or
which are or are to be situated in an area designated by the Secretary of State under subsection (2A) below;
“ controlled extension ” , in relation to any controlled premises, means works designed—
(a) to extend, adapt or be used in conjunction with the controlled premises; or
(b) to extend or adapt works used in conjunction with the controlled premises.
(2A) If, on an application by a health authority, the Secetary of State is satisfied that relevant hospital premises in the whole or any part of their area or district provide or will provide, if taken together, one hundred and twenty or more beds for the use of patients, he may, after consulting with such persons and representative bodies as appear to him to be concerned, by regulations designate the whole or, as the case may be, that part of the authority’s area or district as an area in which all hospital premises which provide or will provide beds for the use of patients shall be controlled premises; and regulations under this subsection—
(a) may contain such transitional provisions as appear to the Secretary of State to be necessary or expedient; and
(b) shall have effect for such period not exceeding five years as may be prescribed.
(2B) In determining for the purposes of subsection (2A) above how many beds relevant hospital premises will provide, the Secretary of State shall not take into account the proposed execution of any works unless—
(a) an authorisation for the execution of those works has been granted; or
(b) a contract for the execution of those works has been entered into.
(2C) The Secretary of State shall not exercise the power conferred by subsection (2A) above unless, having regard to the matters mentioned in subsection (3)( a ) of section 13 below, he considers that the execution of works which, if the power were exercised, would be controlled works would be likely to interfere as mentioned in paragraph ( a ) or operate as mentioned in paragraph ( b ) of subsection (2) of that section.
(3) Subsection (1) above—
(a) does not apply in the case of works that are to be executed by or on behalf of the Crown or for the purposes of a visiting force; but
(b) in the case of works that are to be executed otherwise than as aforesaid, shall apply notwithstanding any interest of the Crown in the land on which, or in any premises in connection with which, the works are to be executed.
(4) Subsection (1) above does not apply in the case of works for the construction of a controlled extension of controlled premises if—
(a) the premises are situated elsewhere than in an area designated by the Secretary of State under subsection (2A) above; and
(b) the premises were constructed as controlled premises, or were converted into controlled premises, whether before or after the coming into force of this Part of this Act; and
(c) where the works will enable additional beds to be provided, the aggregate number of additional beds which will then have been provided at the premises since the beginning of the current three year period (or, if later, the time when the premises were constructed or converted) will not exceed the permitted number.
(5) In subsection (4) above—
“ permitted number ” , in relation to a three year period, means one fifth of the number of beds provided at the premises in question at the beginning of that period or, if later, the time when the premises were constructed or converted;
“ three year period ” means the period of three years beginning with the passing of the Health Services Act 1980 and each successive period of three years.