58.— Section 179(6) of the Principal Act is amended—

(a) by the substitution of the following paragraph for paragraph (a):

“(a) consists of works of maintenance or repair other than works to a protected structure, or a proposed protected structure, which would materially affect the character of—

(i) the structure, or

(ii) any element of the structure which contributes to its special architectural, historical, archaeological, artistic, cultural, scientific, social or technical interest,”,

(b) by the substitution of the following paragraph for paragraph (c):

“(c) consists of works which a local authority is required to undertake—

(i) by or under any enactment,

(ii) by or under the law of the European Union, or a provision of any act adopted by an institution of the European Union, or

(iii) by order of a court.”.