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UK REACH: New Transitional Registration Model (ATRm) – What Companies Need to Know Now
The UK government and DEFRA has published the results of the consultation on the Alternative Transitional Registration Model (ATRm) for UK REACH. This clarifies how so-called “transitional substances”—that is, substances that were already registered under EU REACH prior to Brexit—will be handled in the future.
For companies that manufacture, import, or use substances in the UK market, this is a key development with direct implications for future registration requirements and cost structures.
What is the ATRm?
The ATRm is an alternative approach to the registration of existing substances under UK REACH. The aim is to simplify the previous, highly data-intensive approach while ensuring an appropriate level of protection for people and the environment.
The focus is particularly on:
- Reducing costs and administrative burdens
- Avoiding unnecessary duplicate registrations compared to EU REACH
- Ensuring practical implementation for companies
Key findings of the consultation
The government’s response, now published, provides greater clarity in the following areas:
1. Retention of the hazard-based approach
The ATRm will continue to be based on a hazard assessment approach (hazard information baseline).
This means:
Companies must continue to provide basic substance data, but to a reduced extent compared to complete REACH dossiers.
2. No additional requirements regarding use and exposure
The additional requirements regarding use and exposure data that were originally discussed will not be introduced.
This is a significant relief for companies, as this data:
- is time-consuming to collect
- often involves complex supply chains
- can incur substantial costs
3. Greater planning certainty – but action is still required
Even though the model is being simplified, one thing remains clear;
Companies must continue to actively address their UK REACH obligations.
What does this mean specifically for your company?
The publication of the ATRm is an important step—but it does not replace the need for strategic preparation.
Companies should now, in particular:
- Analyze their substance portfolio
Which substances are affected by UK REACH? - Review existing EU REACH data
Which data can be used, and where are there gaps? - Develop a registration strategy
How can the effort required under the ATRm be managed efficiently? - Adjust resources and timelines
Even a simplified model requires preparation
Context: Progress, but not a sure thing
The ATRm is a clear signal that the UK government has responded to industry concerns.
The decision to waive the requirement for additional use and exposure data significantly reduces complexity.
Nevertheless, UK REACH remains a separate regime—with its own requirements, deadlines, and risks.
Conclusion
With the publication of the ATRm, UK REACH is taking further shape.
For companies, this means:
- Less bureaucratic effort than originally feared
- But a clear need for action remains
Those who analyze and plan early on can minimize costs and avoid regulatory risks.
Do you need support with UK REACH?
We can assist you with:
- Portfolio analyses
- Data evaluation and gap analyses
- Development of efficient registration strategies
- Operational implementation of your UK REACH obligations
Contact us—we’ll bring structure to your compliance.