Nothing in this Order shall affect the operation of any provision of an enactment repealed by this Order in relation to—
(a) plans which, in accordance with any such provision, were deposited with a local authority before the 27th June 1966, and
(b) work carried out in accordance with plans so deposited with a local authority before that date, with or without any departures or deviations from those plans, and
(c) work carried out and completed before that date, and
(d) temporary or movable buildings which were erected in accordance with a conditional consent given by a local authority before that date.