23.—(1) This article applies to the land specified in Schedule 7 (acquisition of subsoil and rights only).
(2) In the case of the land specified in Part 1 of Schedule 7, the undertaker’s powers of compulsory acquisition under article 19 (compulsory acquisition of land) and article 22 (compulsory acquisition of rights) are limited to the acquisition of, or the acquisition of rights over, so much of the subsoil of that land as is required for the authorised development, or to facilitate it, or is incidental to it.
(3) In the case of the land specified in Part 2 of Schedule 7, the undertaker’s powers of compulsory acquisition under article 19 and article 22 are limited at surface level and above to the acquisition of rights over so much of that land as is required for the authorised development, or to facilitate it, or is incidental to it.