Development is not permitted by Class F if—
(a)in the case of any Class F(b) development involving the installation of a structure for housing apparatus exceeding 29 cubic metres in capacity, that installation would be carried out at or above ground level, or under a highway used by vehicular traffic,
(b)in the case of any Class F(c) development—
(i)the borehole is shown in an order approved by the Secretary of State for Trade and Industry for the purpose of section 4(6) of the Gas Act 1965; or
(ii)any plant or machinery would exceed 6 metres in height, or
(c)in the case of any Class F(e) development, the building would exceed 15 metres in height, or
(d)in the case of any Class F(f) development—
(i)it would consist of or include the erection of a building, or the reconstruction or alteration of a building where its design or external appearance would be materially affected;
(ii)it would involve the installation of plant or machinery exceeding 15 metres in height, or capable without the carrying out of additional works of being extended to a height exceeding 15 metres; or
(iii)it would consist of or include the replacement of any plant or machinery, by plant or machinery exceeding 15 metres in height or exceeding the height of the plant or machinery replaced, whichever is the greater.