A trade union shall compile and maintain a register of the names and addresses of its members, and shall secure, so far as is reasonably practicable, that the entries in the register are accurate and are kept up-to-date.
The register may be kept by means of a computer.
A trade union shall—
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For the purposes of this section a member's address means either his home address or another address which he has requested the union in writing to treat as his postal address.
The remedy for failure to comply with the requirements of this section is by way of application under section 25 (to the Certification Officer) or section 26 (to the court) ; see also the powers of the Certification Officer under section 24B to make a declaration and an enforcement order .