13. Paragraphs 9 to 12 do not apply where the authorised works constitute major transport works for the purposes of Part 3 (street works in England and Wales) of the 1991 Act, but instead—
(a)the allowable costs of the relocation works are to be determined in accordance with section 85 (sharing of cost of necessary measures) of that Act and any regulations for the time being having effect under that section; and
(b)the allowable costs are to be borne by Network Rail and the statutory utility in such proportions as may be prescribed by any such regulations.