11.—(1) Every client shall ensure that the planning supervisor for any project carried out for the client is provided (as soon as is reasonably practicable but in any event before the commencement of the work to which the information relates) with all information mentioned in paragraph (2) about the state or condition of any premises at or on which construction work included or intended to be included in the project is or is intended to be carried out.
(2) The information required to be provided by paragraph (1) is information which is relevant to the functions of the planning supervisor under these Regulations and which the client has or could ascertain by making enquiries which it is reasonable for a person in his position to make.