Sch 4 para 6
(1) Where a landlord is required by a notice under paragraph 3 to afford the surveyor facilities for inspection or taking copies or extracts in respect of any document which is in the custody or under the control of a superior landlord— (a) the landlord shall on receiving the notice inform the surveyor as soon as may be of that fact and of the name and address of the superior landlord, and (b) the surveyor may then give the superior landlord notice in writing requiring him to afford the facilities in question in respect of the document. (2) Paragraphs 3 and 5(1) and (3) have effect, with any necessary modifications, in relation to a notice given to a superior landlord under this paragraph.