http://www.legislation.gov.uk/ukpga/1992/52/section/183Trade Union and Labour Relations (Consolidation) Act 1992An Act to consolidate the enactments relating to collective labour relations, that is to say, to trade unions, employers’ associations, industrial relations and industrial action.1992-07-16texttext/xmlenStatute Law Database2026-04-08Expert Participation2026-04-07 Part IV Industrial RelationsChapter I Collective bargaining Disclosure of information for purposes of collective bargaining Complaint of failure to disclose information.1831A trade union may present a complaint to the Central Arbitration Committee that an employer has failed—ato disclose to representatives of the union information which he was required to disclose to them by section 181, orbto confirm such information in writing in accordance with that section.The complaint must be in writing and in such form as the Committee may require.2If on receipt of a complaint the Committee is of the opinion that it is reasonably likely to be settled by conciliation, it shall refer the complaint to ACAS and shall notify the trade union and employer accordingly, whereupon ACAS shall seek to promote a settlement of the matter.If a complaint so referred is not settled or withdrawn and ACAS is of the opinion that further attempts at conciliation are unlikely to result in a settlement, it shall inform the Committee of its opinion.3If the complaint is not referred to ACAS or, if it is so referred, on ACAS informing the Committee of its opinion that further attempts at conciliation are unlikely to result in a settlement, the Committee shall proceed to hear and determine the complaint and shall make a declaration stating whether it finds the complaint well-founded, wholly or in part, and stating the reasons for its findings.4On the hearing of a complaint any person who the Committee considers has a proper interest in the complaint is entitled to be heard by the Committee, but a failure to accord a hearing to a person other than the trade union and employer directly concerned does not affect the validity of any decision of the Committee in those proceedings.5If the Committee finds the complaint wholly or partly well-founded, the declaration shall specify—athe information in respect of which the Committee finds that the complaint is well founded,bthe date (or, if more than one, the earliest date) on which the employer refused or failed to disclose or, as the case may be, to confirm in writing, any of the information in question, andca period (not being less than one week from the date of the declaration) within which the employer ought to disclose that information, or, as the case may be, to confirm it in writing.6On a hearing of a complaint under this section a certificate signed by or on behalf of a Minister of the Crown and certifying that a particular request for information could not be complied with except by disclosing information the disclosure of which would have been against the interests of national security shall be conclusive evidence of that fact.A document which purports to be such a certificate shall be taken to be such a certificate unless the contrary is proved.S. 183 modified (E.W.) (2.3.1998) by S.I. 1998/218, art. 3, Sch.S. 183 modified (1.9.1999) by S.I. 1999/2256, art. 3, Sch.Ss. 181-185 modified (W.) (12.5.2006) by The Education (Modification of Enactments Relating to Employment) (Wales) Order 2006 (S.I. 2006/1073), art. 3, Sch.Ss. 181-185 modified (E.) (1.9.2003) by The Education (Modification of Enactments Relating to Employment) (England) Order 2003 (S.I. 2003/1964), art. 3, Sch.