The Gas Industry (Rateable Values) (England) Order 2000
Under paragraph 3(2) of Schedule 6 to the Local Government Finance Act 1988, the Secretary of State may by order provide that a non-domestic hereditament of a description shown in a central rating list is not to be valued for non-domestic rating on the basis set out in paragraphs 2 to 2C of that Schedule (that is to say, by reference to the rent a hypothetical tenant would pay for the hereditament on an annual basis), but that their rateable values shall be such as are specified in the order or determined in accordance with prescribed rules.