The council on whom a purchase notice is served under section 180 of this Act shall, before the end of the period of three months beginning with the date of service of that notice, serve on the owner by whom the purchase notice was served a notice stating either—
Where the council on whom a purchase notice is served by an owner have served on him a notice in accordance with subsection (1)(a) or (b) of this section, the council, or the other local authority or statutory undertakers specified in the notice, as the case may be, shall be deemed to be authorised to acquire the interest of the owner compulsorily in accordance with the relevant provisions, and to have served a notice to treat in respect thereof on the date of service of the notice under that subsection.
Where the council on whom a purchase notice is served by an owner propose to serve on him a notice in accordance with subsection (1)(c) of this section, they shall transmit a copy of the purchase notice to the Secretary of State, together with a statement of their reasons.
In this section "the relevant provisions" means the provisions of Part VI of this Act or, in the case of statutory undertakers, any statutory provision (however expressed) under which they have power, or may be authorised, to purchase land compulsorily for the purposes of their undertaking.