30.—(1) A local authority may at any time during the funding period redetermine a maintained school’s budget share, or the amount allocated to a relevant early years provider, for the funding period or any previous funding period in order to correct an error in a determination or redetermination made under these Regulations or any previous regulations made under sections 47 or 47ZA of the 1998 Act, whether arising from a mistake as to the number of pupils at the school or otherwise, and any such redetermination will take effect in the next financial year following the funding period.
(2) A local authority may redetermine a school’s budget share to take into account any changes in that school’s non-domestic rate liability in relation to the funding period or any previous funding period.
(3) In so far as any redetermination under paragraph (1) would require the amount that would otherwise have been the budget share of a school to be reduced, it may not be reduced to a figure which is lower than that which could have been allocated to that school under the Regulations in force during the funding period in which the error occurred.