4. Where part of the hereditament owned or occupied by the Port Authority is transferred to and vests in Port of Tilbury London Limited (“the company”) in accordance with a scheme under section 22 of the 1991 Act, in the application of Schedule 7A to the Local Government Finance Act 1988 after the transfer any period during which the Authority owned or occupied that part of the hereditament before the transfer shall, for the purposes of paragraph 2(5) to (9) of that Schedule, be treated as a period during which the company owned or occupied it (as the case may be).