(1) Subject to paragraph (2), the following are hereby revoked—
(a) the British Gas plc (Rateable Values) Order 1994
(b) the Gas Act 1995 (Rateable Values) (Modification) Order 1997 ; and
(c) the British Gas plc (Rateable Values) (Amendment) Order 1997
(2) Without prejudice to section 16(1) of the Interpretation Act 1978 , the provisions of the Orders mentioned in paragraph (1) shall continue to have effect for the purposes of, and for purposes connected with—
(a) any alteration of a central list compiled before 1st April 2000; or
(b) any provision made by regulations under section 58 (special provision for 1995 onwards) of the Act as to the chargeable amount as regards a hereditament for a relevant period as defined in that section.