The Commissioners of Inland Revenue shall—
as they consider necessary or expedient for the purpose of facilitating the compilation and maintenance by those officers of valuation lists in accordance with this Chapter.
The valuations shall be carried out by reference to the appropriate date and on such assumptions and in accordance with such principles as may be prescribed.
For the purposes of subsection (2) above, the appropriate date is—
The power to make regulations under subsection (2A)(b)(ii) is exercisable—
Without prejudice to the generality of their powers, the Commissioners of Inland Revenue may appoint persons who are not in the service of the Crown to assist them in carrying out the valuations.
For the purposes of the valuations the Commissioners of Inland Revenue may disclose to a person appointed under subsection (3) above—
If any person to whom any report or information is disclosed by virtue of subsection (4) above uses or discloses the report or information, in whole or in part, otherwise than for the purposes of the valuations, he shall be liable—
Except as provided by subsection (4) above, nothing in this section permits the disclosure to any person appointed under subsection (3) above of information which is subject to the rules of confidentiality applicable to the Commissioners of Inland Revenue.