   
  
G/TBT/N/GBR/67/Add.1  
 
2 April 2024  
(24-2778) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
NOTIFICATION  
Addendum  
The following communication , dated  28 March 2024, is being circulated at the request of the 
delegation of the United Kingdom . 
 
_______________  
 
 
Title:  Great Britain (GB) mandatory classification and labelling of 25 hazardous chemical substances 
– GB mandatory classification and labelling (MCL) - Ministerial Decision and updated GB MCL List  
 
Reason for Addendum:  
[ ] Comment period changed - date:   
[X] Notified measure adopted - date: 2 February 2024  
[X] Notified measure published - date: 2 March 2024  
[X] Notified measure enters into force - date: 2 March 2024 (voluntary) 2 September 2025 
(mandatory)  
[X] Text of final measure available from1:  
Regulat ion (EC) No. 1272/2008 (the GB CLP Regulation) – Ministerial Decision on the GB 
mandatory classification and labelling of 25 hazardous chemical substances.  
• The updated GB MCL List (which includes the legally binding mandatory classification 
and labelling  of the 25 substances) is available on the HSE website. 
https://www.hse.gov.uk/chemical -classification/assets/docs/mcl -list.xlsx  
• The Ministerial Decision including summaries of the new/revised/deleted GB MCLs  for 
the 25 substances has been published in the HSE GB CLP Publication Table on the HSE 
website.  
https://www.hse.gov.uk/chemical -classification/ assets/docs/publication -template.xlsx  
[ ] Notified measure withdrawn or revoked - date:  
Relevant symbol if measure re -notified:   
[X] Content or scope of notified measure changed  and text available from1:  
Methyl methacrylate was included in error, but no changes proposed. The final text has 
been updated to reflect this and includes 25 substances.  
New deadline for comments (if applicable):   
[ ] Interpretive guidance issued and text available from1:  
[ ] Other:  
 
 
1 This information can be provided by including a website address, a pdf attachment, or other 
information on where the text of the final /modified  measure and/or interpretive guidance can be obtained.  G/TBT/N/GBR/67/Add.1  
 
- 2 - 
 
  Description:  The Ministerial decision, made with consent of the Devolved Governments (Scottish 
and Welsh Government Ministers), was adopted on 2 February 2024, published on 2 March 2024, 
and enters into force on 2 March 2024 (voluntary), 2 September 2025 (mandatory). T he 
classification (Article 15 of the GB CLP Regulation) and labelling (Article 30 of the GB CLP Regulation) 
of the new/revised GB MCLs for the 25 substances should be reviewed and updated by duty holders 
without undue delay. Compliance with the amended 25 GB MCLs must be completed by 2 September 
2025.  
__________  
 
 