48Anything which has been done by or in relation to a water authority under or for the purposes of any provision of section 22 of the 1973 Act (duties with regard to nature, conservation and amenity) and is effective immediately before the transfer date shall have effect on and after that date—
(a)as if it had been done by or in relation to both the Authority and every company whose appointment under Chapter I of Part II of this Act as the water undertaker or sewerage undertaker for the whole or any part of the water authority’s area comes into force on the transfer date; and
(b)as if it had been so done under or for the purposes of the corresponding provision of section 8 or 9 of this Act.