A trade union required to maintain a register of the names and addresses of its members by section 24 must send to the Certification Officer a membership audit certificate in relation to each reporting period.
In this section and in sections 24ZB to 24ZF, a "reporting period" means a period in relation to which the union is required by section 32 to send an annual return to the Certification Officer.
The union must send the membership audit certificate in relation to a reporting period to the Certification Officer at the same time as it sends to the Officer its annual return under section 32 in relation to that period.
In the case of a trade union required by section 24ZB to appoint an assurer in relation to a reporting period, the "membership audit certificate" in relation to that period is the certificate which the assurer is required to provide to the union in relation to that period pursuant to that appointment.
In any other case, the "membership audit certificate" in relation to a reporting period is a certificate which—
A trade union must, at a person's request, supply the person with a copy of its most recent membership audit certificate either free of charge or on payment of a reasonable charge.
The Certification Officer must at all reasonable hours keep available for public inspection, either free of charge or on payment of a reasonable charge, copies of all membership audit certificates sent to the Officer under this section.