61. The following provisions are prescribed for the purposes of section 35C(1)(a) of the 1984 Act (stop notices)—
(a)regulation 3 (HRB work not to be started before approval);
(b)regulation 7(12)(b) (HRB work not to proceed until approval under a requirement is received);
(c)regulation 11 (specified work to an existing HRB not to be started before approval);
(d)regulation 15(12)(b) (work to existing HRB not to proceed until approval under a requirement is received);
(e)regulation 18(6) (major change not to be carried out before approval);
(f)regulation 24(11)(a) (major change not to proceed until approval under a requirement is received) but only in relation to a major change (as defined in regulation 26 of those Regulations).