3.—(1) Paragraph A.1 is amended as follows.
(2) In sub-paragraph (1) (ground-based apparatus)—
(a)in paragraph (c)—
(i)in sub-paragraph (i), for “25” substitute “30”;
(ii)in sub-paragraph (ii), for “20” substitute “25”;
(b)immediately after paragraph (c)(ii), omit the “or”;
(c)for paragraph (d) substitute—
“(d)in the case of the alteration or replacement of a mast, the height of the mast, excluding any antenna, would when altered or replaced exceed the greater of the height of the existing mast or a height of—
(i)30 metres above ground level on unprotected land; or
(ii)25 metres above ground level on article 2(3) land or land which is on a highway; or
(e)in the case of the alteration or replacement of a mast—
(i)the mast is on any land which is, or is within, a site of special scientific interest; and
(ii)the mast would, when altered or replaced, exceed the original width of the mast by more than one third.”.
(3) In sub-paragraph (2) (building-based apparatus), for paragraph (c) substitute—
“(c)in the case of the installation, alteration or replacement of a mast on a building which is—
(i)on article 2(3) land or land which is, or is within, a site of special scientific interest; and
(ii)less than 15 metres in height,
the mast would be within 20 metres of the highway (unless the siting remains the same and the dimensions of the altered or replaced mast are no greater);”.
(4) In paragraph (a)(iv) of sub-paragraph (4) (apparatus on masts on protected land), for “A.1(1)(d)(i)(bb)” substitute “A.1(1)(d)(ii)”.
(5) In sub-paragraph (9) (radio equipment housing), in paragraph (c) omit “on any article 2(3) land, or”.
(6) After sub-paragraph (9) insert—
“(9A) Sub-paragraph (9)(b) and (c) does not apply where the development is carried out within a permitted compound (and accordingly the development described in that sub-paragraph is permitted by Class A(a)).”.