MIR 5.2.4

If a notification rule requires notification within a specified period:

(a) the Recognised Body must give the notification so as to be received by the Regulator no later than the end of that period; and
(b) if the end of that period falls on a day which is not a business day, the notification must be given so as to be received by the Regulator no later than the start of the first business day after the end of that period.