Key takeaway
What This Development Means
HSE has added 17 new substances of very high concern to the UK REACH Candidate List following consultation. The update creates supplier communication obligations and, alongside the Registry of SVHC Intentions, signals substances that may face future authorisation or risk-management measures in Great Britain.
What Is The UK REACH Candidate List?
The UK REACH Candidate List identifies substances of very high concern that may pose serious risks to human health or the environment. Once a substance is added, suppliers face communication and information obligations, and the substance may later be considered for authorisation or other regulatory controls.
Why Is The Registry Of SVHC Intentions Important?
The Registry of SVHC Intentions provides advance notice of substances being considered for SVHC identification. Although entries in the registry are not yet subject to Candidate List obligations, they help companies anticipate future regulatory developments, assess supply chain risks and plan potential substitution activities.
Source basis: Health And Safety Executive, UK REACH Candidate List (16 June 2026)
The UK Health and Safety Executive (HSE) has added 17 new substances of very high concern (SVHCs) to the UK REACH Candidate List, marking one of the most significant updates to the regime in 2026.
Announced on 16 June 2026, the decision follows a public consultation that closed on 20 April and updates the UK REACH Registry of SVHC Intentions Until Outcome (RoI), which now contains 26 entries.
The move introduces new compliance obligations for suppliers across Great Britain and provides an early indication of substances that could face future authorisation requirements or additional risk-management measures.
UK REACH Candidate List Update Introduces New Compliance Duties
The newly identified SVHCs were added on the basis of their classification as carcinogenic, mutagenic or toxic for reproduction (CMR). Inclusion on the UK REACH Candidate List triggers legal obligations for companies that manufacture, import, distribute or supply articles containing these substances above relevant thresholds.
Among the newly listed substances are several brominated flame retardants, including BMP, TBNPA, 2,3-DBPA and tetrabromobisphenol A (TBBPA). These substances have historically been used in plastics, electronics, construction materials and other applications where fire resistance is required.
Other newly identified SVHCs include tetraglyme, dioctyltin dilaurate (DOTL), Lysmeral, sodium borate compounds, DBMC, tris(2-methoxyethoxy)vinylsilane, N-(hydroxymethyl)acrylamide, barium diboron tetraoxide, photoinitiators such as TPO and Omnirad 379, bis(α,α-dimethylbenzyl) peroxide, Tetra-PSCA and Reactive Brown 51.
Registry Of SVHC Intentions Signals Future Regulatory Priorities
Alongside the Candidate List update, HSE revised the Registry of SVHC Intentions Until Outcome. The registry now combines substances already identified as SVHCs with those still undergoing assessment at the Annex 15 dossier development stage.
Nine entries remain under consideration, including medium-chain chlorinated paraffins (MCCPs), perfluoroheptanoic acid (PFHpA) and its salts, BPAF and related salts, Bumetrizole, bis(4-chlorophenyl) sulphone and several organophosphate and brominated flame-retardant substances.
While inclusion in the RoI does not create immediate legal obligations, it serves as an important early-warning mechanism for businesses. Companies using substances listed in the registry may wish to assess potential alternatives and monitor future regulatory developments.
Impact On Manufacturers, Importers And Downstream Users
The latest UK REACH SVHC update affects a broad range of sectors, including chemicals, plastics, electronics, coatings, adhesives, textiles, automotive manufacturing and construction products.
Suppliers of substances or mixtures containing Candidate List entries must review safety data sheets and communication requirements. Businesses supplying articles may also need to provide information to customers regarding the presence of SVHCs.
For procurement, product stewardship and compliance teams, the update reinforces the need for supply chain visibility and substance tracking. Organisations with products containing newly listed SVHCs should assess inventory, supplier declarations and future substitution strategies.
Preparing For Future UK REACH Authorisation Decisions
Candidate List inclusion is often the first step towards stricter regulatory controls. Substances identified as SVHCs can later be prioritised for inclusion in the UK REACH Authorisation List, potentially restricting their continued use without regulatory approval.
Businesses operating in Great Britain should therefore view both the Candidate List and the RoI as strategic regulatory indicators. Early assessment of substance portfolios can help reduce compliance risks and minimise disruption if additional restrictions are introduced.
Summary
The UK REACH Candidate List has expanded with 17 new SVHC entries, increasing compliance obligations for suppliers and signalling potential future regulatory controls. The accompanying RoI update highlights additional substances under evaluation, giving businesses across the chemicals value chain valuable insight into emerging regulatory priorities and future substance management challenges.
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