23.— (1) Within such period as the Commission may specify in a designation made by it under section 17(2)(a)(ii) or 18, but in any case not more than 3 months from the date of such designation, a universal postal service provider shall give to the Commission a statement in writing of—

(a) the terms and conditions of its universal postal service provision for approval by the Commission, subject to section 24 (3), with or without amendment, and

(b) the charges made by it in respect of the universal postal service provision (save in so far as may otherwise be agreed between the universal postal service provider and a postal service user).

(2) When the terms and conditions are approved by the Commission, with or without amendment, a universal postal service provider shall publish on its website and by such other means as the Commission may direct—

(a) notice of the approval,

(b) the terms and conditions so approved, and

(c) the charges referred to in subsection (1)(b).

(3) The terms and conditions approved under this section shall come into effect on a day that is not earlier than 14 days after the date of their publication under subsection (2)(b).