If, on a day ( the relevant day ) before the day on which this Act commences, a person who, on the relevant day, held an office to which this Act applies –

(a) took, or purported to take, a judicial oath, oath of allegiance, or oath of office, in relation to the holding of the office or the appointment of the person to the office; or

(b) made, or purported to make, an affirmation of a judicial oath, oath of allegiance, or oath of office, in relation to the holding of the office or the appointment of the person to the office –

the oath or affirmation is deemed for the purposes of any Act –

(c) to have been validly taken, or made, by the person on the relevant day; and

(d) to have always been validly taken, or made, by the person on the relevant day; and

(e) to have been validly subscribed, and to have always been validly subscribed, by the person on the relevant day; and

(f) to have been validly taken or made before the person took an action, or performed or exercised a function, duty or power, in relation to that office –

and no action taken or omitted to be taken by the person after the taking, or purported taking of the oath or the making, or purported making, of the affirmation is invalid by reason only that, at the time at which the action was taken or omitted to be taken, this section was not in force.