(1) This section applies if--
(a) an incident to which section 154 or 155 of the repealed regulation applies happens before the commencement; and
(b) the relevant section requires something to be done or not done in relation to the incident; and
(c) the thing has not been done or done before the commencement.
(2) The repealed regulation continues to apply in relation to the incident as if this regulation had not been made.