An employer who recognises an independent trade union shall, for the purposes of all stages of collective bargaining about matters, and in relation to descriptions of workers, in respect of which the union is recognised by him, disclose to representatives of the union, on request, the information required by this section.
The information to be disclosed is all information relating to the employer's undertaking (including information relating to use of agency workers in that undertaking) which is in his possession, or that of an associated employer, and is information—
A request by trade union representatives for information under this section shall, if the employer so requests, be in writing or be confirmed in writing.
In determining what would be in accordance with good industrial relations practice, regard shall be had to the relevant provisions of any Code of Practice issued by ACAS, but not so as to exclude any other evidence of what that practice is.
Information which an employer is required by virtue of this section to disclose to trade union representatives shall, if they so request, be disclosed or confirmed in writing.