Development not permitted: radio equipment housing
(8) Development is not permitted by Class A(a) if, in the case of the installation, alteration or replacement of radio equipment housing—
(a)the development is not ancillary to the use of any other electronic communications apparatus;
(b)the cumulative volume of such development would exceed 90 cubic metres or, if located on the roof of a building, the cumulative volume of such development would exceed 30 cubic metres; or
(c)on any article 2(3) land, or on any land which is, or is within, a site of special scientific interest, any single development would exceed 2.5 cubic metres, unless the development is carried out in an emergency.