51.—(1) Where the Director makes—
(a)an exceptional case determination under Article 12A(2) of the Order; or
(b)a wider public interest determination under Article 12A(4) of the Order,
the Director shall provide written reasons for the determination.
(2) Notwithstanding regulation 3, a certificate under this Part may, at the discretion of the Director, specify that the certificate is to be treated as having effect from such date as the Director considers appropriate.