UK REACH Registration Services

UK REACH at a Glance

What Is UK REACH?

UK REACH is the Great Britain regulatory framework for the registration, evaluation, authorisation and restriction of chemicals. It came into operation on 1 January 2021 after EU REACH was brought into domestic law with the changes needed for Great Britain.

The core principles of EU REACH were retained, but the two systems now operate independently. UK REACH regulates chemicals placed on the market in Great Britain. EU REACH continues to apply in the European Union, the European Economic Area and Northern Ireland.

The Health and Safety Executive acts as the UK REACH Agency. Registrants submit information through the Comply with UK REACH service.

Who Needs to Assess UK REACH Registration?

You should assess your obligations before manufacture or import if your business is:

• a Great Britain-based manufacturer producing a substance at 1 tonne or more per year;

• a Great Britain-based importer bringing a substance into Great Britain at 1 tonne or more per year;

• an overseas manufacturer or formulator supplying substances or mixtures to customers in Great Britain;

• an overseas article producer supplying articles from which substances are intended to be released;

• an importer of paints, inks, adhesives, cleaning products, polymers, plastic additives, dyes or other mixtures where an individual substance may reach the threshold;

• a company that previously relied on an EU REACH registration and needs to determine whether grandfathering or DUIN provisions apply;

• a company adding importers, increasing tonnage, changing uses or restructuring its supply chain; or

• a company entering the Great Britain market for the first time.

Important Scope and Boundary Points

• Mixtures are not registered as a whole. Each substance in a mixture must be assessed separately, and volumes are aggregated for the relevant legal entity.

• Polymers are generally exempt from registration, but monomers or other constituent substances may still require registration.

• Articles require a separate assessment. Registration may apply where a substance is intended to be released and the applicable tonnage threshold is met.

• An exemption from registration does not remove every compliance duty. Classification, labelling, safety data, authorisation, restriction and supply-chain communication obligations may still apply.

How to Choose the Correct UK REACH Registration Route

The correct route depends on the applicant’s legal establishment, pre-2021 supply chain, existing EU REACH status, substance history and intended future imports. Grandfathering, DUIN and new registration are different mechanisms and should not be treated as interchangeable.

HSE currently accepts late grandfathering information and late DUINs where the relevant entity is eligible, but the submission should be made as soon as possible. A newly appointed Only Representative cannot create DUIN eligibility for an importer that did not meet the historical conditions.

UK REACH Only Representative or Importer Registration?

An overseas manufacturer, formulator or article producer cannot normally act as the UK REACH registrant directly. It may appoint a Great Britain-based Only Representative (OR), or each Great Britain-based importer may hold its own registration.

An OR assessment should consider commercial control, confidentiality, the number of importers, tonnage allocation, data ownership and long-term maintenance—not only the initial dossier submission.

UK REACH Transitional Registration Deadlines: 2029–2031

The REACH (Amendment) (No. 2) Regulations 2026 (S.I. 2026/849) were made on 16 July 2026 and come into force on 6 August 2026. They extend the phased submission deadlines for eligible transitional registrations to 2029, 2030 and 2031.

For the legal update and implementation context, see UK REACH Transitional Registration Deadlines Legally Extended to 2029–2031.

What Is the Status of the Alternative Transitional Registration Model?

The Alternative Transitional Registration Model (ATRm) is intended to revise the information requirements for substances already on the market under eligible transitional registrations. In its March 2026 response, the UK Government described a model involving hazard conclusions, use and exposure information, chemical safety reporting, substance groups and transitional evaluation powers.

However, the 2026 deadline amendment does not itself implement the ATRm. The Government has stated that further legislation will be brought forward. Until the revised requirements are legally implemented and supported by final guidance, companies should not assume that the earlier consultation proposals have replaced the current registration requirements.

What Information Is Needed for UK REACH Registration?

The exact dossier depends on the substance identity, tonnage band, uses, hazard profile, intermediate status, existing data and data-use rights. A data gap and ownership review should be completed before purchasing access rights or commissioning new testing.

Requirements should be confirmed for each substance and route. Information already available is not necessarily information that the applicant has the right to use in a UK REACH dossier.

UK REACH Registration Process

UK REACH Registration Timeline and Cost Factors

What Affects the Timeline?

There is no universal registration timeline. Project duration may depend on:

• the completeness and quality of the substance identity information;

• the Article 26 inquiry and HSE processing;

• the status of existing registrants and the lead registrant;

• data-sharing and Letter of Access negotiations;

• testing or assessment gaps;

• the tonnage band, hazard profile and use complexity;

• the applicant’s response time; and

• whether the project is a new registration or an eligible transitional registration.

Companies entering the market for the first time should incorporate registration preparation into their commercial launch plan rather than waiting until imports are close to the 1-tonne threshold.

What Affects the Cost?

Total cost may include:

• HSE administrative fees;

• data access or Letter of Access fees;

• testing and expert-assessment costs;

• inquiry and registration dossier preparation;

• Only Representative and importer-management services; and

• post-registration maintenance and updates.

HSE’s fee schedule effective from 1 April 2025 lists a standard administrative fee of GBP 2,222 for a full registration, whether individual or joint, across the tonnage bands. Reduced fees apply to qualifying medium, small and micro enterprises. The total project cost cannot be estimated from the official fee alone because substance data, data rights, testing needs and the registration route may be the main cost drivers. Official charges should be reconfirmed at the time of submission.

What Happens After Registration?

Registration is an ongoing compliance obligation. Registrants and Only Representatives should:

• track annual tonnage per substance, legal entity and covered importer;

• review whether dossier updates are needed after changes to tonnage, composition, uses, exposure or classification;

• maintain OR appointment records, importer lists and evidence of supply-chain coverage;

• monitor the UK REACH Candidate List, Authorisation List and restrictions;

• keep safety data sheets, labels and risk-management measures aligned with the registration information; and

• respond to HSE information requests, compliance checks or other regulatory communications.

For related hazard communication support, see Global GHS, SDS/MSDS and Label Compliance.

How REACH24H Can Help

Why Choose REACH24H?

Frequently Asked Questions

Related Services and Recommended Reading

• EU REACH Registration Services

• Global GHS, SDS/MSDS and Label Compliance

• UK REACH Transitional Registration Deadlines Legally Extended to 2029–2031

• UK Releases Approach to the UK REACH Candidate List of SVHCs

• UK REACH Candidate List Updated with 15 New SVHCs

Official References

• HSE: UK REACH Explained

• HSE: Guidance for New Registrants under UK REACH

• HSE: Downstream User Import Notification

• HSE: Recognising EU REACH Registrations under UK REACH

• HSE: UK REACH Fees and Charges

• The REACH (Amendment) (No. 2) Regulations 2026

• GOV.UK: Government Response on the Alternative Transitional Registration Model