55.—(1) In the application of section 33 of and Schedule 6 to the General Rate Act 1967 (as set out in Schedule 5 to the Gas Act 1972) to the British Gas Corporation and of section 34 of and Schedule 7 to the said Act to the Central Electricity Generating Board and any Area Board in relation to any rate period beginning on or after the appointed day, the changes of rating areas made by the order shall be deemed to have been operative at all material times.
(2) The provisions of Schedule 5 shall have effect in relation to matters provided for by the said Schedules 6 and 7.