A trade union must give an opt-out information notice to each member of the union—
unless during that period of ten years the political resolution is rescinded or otherwise ceases to have effect.
An "opt-out information notice" is a notice stating that—
An opt-out information notice must be given in accordance with rules of the union approved for the purpose by the Certification Officer.
In deciding whether to approve those rules, the Certification Officer must have regard in each case to the existing practice and character of the union.
As soon as is reasonably practicable after the end of any period of eight weeks within which an opt-out information notice must be given, a trade union must send to the Certification Officer a copy of—
A member of a trade union who claims that the union has failed to comply with this section may complain to the Certification Officer.
Where the Certification Officer is satisfied on a complaint under subsection (6) that a trade union has failed to comply with this section, the Officer may make such order for remedying the failure as the Officer thinks just under the circumstances.
Before deciding the matter the Certification Officer—
An order made by the Certification Officer under this section may be enforced by the Certification Officer in the same way as an order of the court.