2.—(a) Particulars of the services or fittings so far as is necessary to establish whether they comply with all such requirements of these regulations as apply to them; and
(b)where it is proposed to provide an unvented hot water storage system to which Part P of these regulations apply, the particulars required by paragraph (a) shall include—
(i)the name, make, model and type of hot water storage system to be installed;
(ii)the name of the body, if any, which has approved or certified that the system is capable of performing in a way which satisfies the requirements of Part P; and
(iii)the name of the body, if any, which has issued any current registered operative identity card to the installer or proposed installer of the system.