(1) The Secretary of State may by order make such provision as he considers appropriate about the operation of sections 27 and 29 in relation to -
(a) references under this Part which relate to arrangements which are in progress or in contemplation; or
(b) notices under section 42(2) or 59(2) which relate to such arrangements.
(2) An order under subsection (1) may, in particular-
(a) provide for sections 27(5) to (8) and 29 to apply with modifications in relation to such references or notices or in relation to particular descriptions of such references or notices;
(b) enable particular descriptions of events, arrangements or transactions which have already occurred-
(i) to be taken into account for the purposes of deciding whether to make such references or such references of a particular description or whether to give such notices or such notices of a particular description;
(ii) to be dealt with under such references or such references of a particular description or under such notice
…