(1)In imposing charges under section 1(1), a local authority must give effect to any determination made under section 7(1) or 9(1).
(2)Subject to any regulations made under subsection (3), a determination is to have effect from such date as the local authority concerned considers reasonable (which may be a date before that on which the determination was made).
(3)The Welsh Ministers may by regulations make provision as to the date from which a determination is to have effect (including provision for a determination to have effect from a date before that on which it was made).
(4)Where a determination replaces an existing determination, the existing determination continues to have effect until the new determination has effect.
(5)For the purposes of subsection (4), a determination replaces an existing determination if it relates to the same person and the same chargeable service as that determination.