13.—(1) In paragraph (1) of Article 57 of the principal Order (duties of public bodies with respect to alterations in valuation list), for the words from “information” to “or not)” there shall be substituted the words “relevant information comes to the notice of a public body”.
(2) For paragraph (2) of that Article there shall be substituted the following paragraph—
“(2) In this Article—
“inform” includes, in relation to a public body, giving relevant information in the possession or control of that body;
“public body” means—
a body established by or under a statutory provision; or
a department of the Government of the United Kingdom;
“relevant information” means information which is relevant to a decision whether to alter a valuation list;
“valuation list” includes a valuation list which has been issued but which has not yet come into force.”.