Not less than 28 days before starting the execution of any works of the type referred to in paragraph 4(2) that will or may adversely affect any apparatus the removal of which has not been required by the undertaker under that paragraph, the undertaker must submit to the statutory undertaker in question a plan, section and description of the works to be executed.

Any works of the type referred to in paragraph 4(2) are to be executed only in accordance with the plan, section and description submitted under sub-paragraph (1) and in accordance with such reasonable requirements as may be made in accordance with sub-paragraph (3) by the statutory undertaker for the alteration or otherwise for the protection of the apparatus, or for securing access to it, and the statutory undertaker is entitled to observe and inspect the execution of those works.

Any requirements made by a statutory undertaker under sub-paragraph (2) must be made within a period of 21 days beginning with the day on which a plan, section and description under sub-paragraph (1) are submitted to it.

If a statutory undertaker in accordance with sub-paragraph (3) and in consequence of the works proposed by the undertaker, reasonably requires the removal of any apparatus and gives written notice to the undertaker of that requirement, sub-paragraphs (1) to (6) apply as if the removal of the apparatus had been required by the undertaker under paragraph 4(2).

Nothing in this paragraph precludes the undertaker from submitting at any time or from time to time, but in no case less than 28 days before commencing the execution of any works, a new plan, section and description instead of the plan, section and description previously submitted, and if this is done, the provisions of this paragraph 5 apply to and in respect of the new plan, section and description.

The undertaker is not required to comply with sub-paragraph (1) in a case of emergency but in that case it must give to the statutory undertaker in question notice as soon as is reasonably practicable and a plan, section and description of those works as soon as reasonably practicable subsequently and must comply with sub-paragraph (2) in so far as is reasonably practicable in the circumstances.