(1)Subject to subsection (2) below, if the Secretary of State is of opinion that it is expedient in the national interest to do so, he may by order made by statutory instrument designate any area of land as an urban development area.
(2)An area of land in England may only be so designated if—
(a)it is in a metropolitan district; or
(b)it is in an inner London borough or partly in an inner London borough and partly in an outer London borough which has a boundary in common with that inner London borough.
(3)Separate parcels of land may be designated as one urban development area.
(4)No order under this section shall have effect until approved by a resolution of each House of Parliament.