A provision of this Act to the effect that something may or must be done on or after payment of a fee--
(a) prescribed by the regulations, enables or requires (as appropriate) the thing to be done if arrangements have been made in accordance with the regulations for the future payment of the fee, or
(b) prescribed under another Act, enables or requires (as appropriate) the thing to be done if arrangements have been made in accordance with the regulations under that Act for the future payment of the fee.