26.—(1) A notification of a decision made following the revision or supersession of a decision made under section 11 (the maintenance calculation), 12 (default or interim maintenance decision) or 17 (supersession) of the 1991 Act, whether as originally made or revised under section 16 of that Act, must, subject to the qualification in regulation 25(3), set out the information mentioned in regulation 25(1) and (2) in relation to the decision in question.
(2) The requirement in paragraph (1) does not apply where the Secretary of State has decided not to supersede a decision and in that case the Secretary of State must, where appropriate and as far as reasonably practicable, notify the parties of that decision.