3.—(1) This ,paragraph applies where another person ( “contractor B”) is authorised to exercise the relevant function or a related function.N.I.
(2) The enactment or obligation does not prevent or penalise the disclosure of relevant information by contractor A or an employee of his, or authority A or an authorised officer of that authority, to contractor B or an employee of his, if—
(a)the disclosure is necessary or expedient for the purpose of facilitating the exercise of the relevant function or a related function; and
(b)where the disclosure is by contractor A or an employee of his, the disclosure falls within a description of disclosures certified by authority A (whether in the authorisation or otherwise) to be capable of being so necessary or expedient.