Regulation 3 Time for making a complaint
(1)
Subject to paragraph (2) a complainant must make a relevant complaint in writing and must send it to the Board before the end of a period of 28 days beginning with the date on which the complainant first knew of, or ought reasonably to have known of, the act or omission in respect of which the complaint is made.
(2)
Where the circumstances of a case are such that, in the opinion of the Board, it is reasonable for a relevant complaint to be made after the end of the period specified in paragraph (1), the Board must give a decision if the complaint is made within such further period as the Board considers to be reasonable.