An authorised registrar who receives a request in writing from one or both of two intended civil partners that they should be registered as civil partners of each other on a date specified in the request (being a date 14 days or fewer after publicisation by the district registrar under subsection (1) of section 90) may, provided that he is authorised to do so by the Registrar General, fix that date as the date for registration; and if a date is so fixed, paragraph (b) of subsection (2) of that section is to be construed as if it were a reference to that date.