s 90 Action by planning authority on whom purchase notice is served.
(1) The planning authority on whom a purchase notice is served shall serve on the owner or lessee by whom the purchase notice was served a notice (a “ response notice ”) stating— (a) that the planning authority are willing to comply with the purchase notice, (b) that another local authority or statutory undertakers specified in the response notice have agreed to comply with it in their place, or (c) that for reasons so specified the planning authority are not willing to comply with the purchase notice and have not found any other local authority or statutory undertakers who will agree to comply with it in their place, and that they have sent the Secretary of State a copy of the purchase notice and of the response notice. (2) A response notice must be served before the end of the period of 3 months beginning with the date of service of the purchase notice. (3) Where the planning authority on whom a purchase notice is served by an owner or lessee have served a response notice on him in accordance with subsection (1)(a) or (b), the planning authority or, as the case may be, the other local authority or statutory undertakers specified in the response notice shall be deemed— (a) to be authorised to acquire the interest of the owner or lessee compulsorily in accordance with the relevant provisions, and (b) to have served a notice to treat in respect of it on the date of service of the response notice. (4) Where the planning authority propose to serve such a response notice as is mentioned in subsection (1)(c), they must first send the Secretary of State a copy— (a) of the proposed response notice, and (b) of the purchase notice. (5) Where the planning authority on whom a purchase notice is served by an owner or lessee do not serve a response notice on him before the end of the period mentioned in subsection (2)— (a) the purchase notice shall be deemed to be confirmed at the end of that period, and (b) subsection (3) shall apply as if the authority had served a response notice on him on the last day of that period. (6) A notice to treat which is deemed to have been served by virtue of subsection (3)(b) or (5)(b) may not be withdrawn under section 39 of the Land Compensation (Scotland) Act 1963.