GB CLP Changes 2026: What UK Craft Sellers Need to Know

If you make candles, wax melts, reed diffusers, or any home fragrance product in the UK, you've probably seen industry headlines about "CLP changes coming in 2026." Some of those headlines describe EU rules that don't apply to Great Britain. Some describe substance-level updates that only affect you if a specific ingredient is on the HSE's mandatory classification list. Almost none of them break out what changes for a typical small craft seller selling only to GB customers.

This guide separates the GB rules from the EU rules and gives you a short list of practical checks to run on your product range.

This covers Great Britain (England, Scotland, Wales). Northern Ireland follows EU CLP under the Windsor Framework — see the NI section below. This is not legal advice.

The Short Answer

For most UK craft sellers selling only to GB customers (no Northern Ireland or EU customers), the headline regime hasn't changed in 2026:

• GB CLP regulation (retained Regulation (EC) No 1272/2008) — still the same hazard classes, still the same labelling elements (hazard pictograms, signal word, H-statements, P-statements, product identifier, supplier identity, nominal quantity).
• EU's new hazard classes (endocrine disruptors, PBT, vPvB, PMT, vPvM) introduced by EU Regulation 2024/2865 — not in GB CLP. The HSE has said it will consider them, but they are not currently part of the GB regime.
• UFI codes — mandatory for EU and Northern Ireland mixtures, not required in GB.

What does change is more specific. The HSE periodically updates the GB Mandatory Classification and Labelling list (GB MCL list) — a legally binding list of substances that must be classified and labelled in a specific way. If a fragrance oil or other ingredient on the GB MCL list changes, that affects you. Several updates have landed since the start of 2025.

What's Actually Changing in GB

1. GB MCL List Updates

The GB MCL list is amended by the HSE as and when required, through a ministerial-decision process, rather than on a fixed annual cycle. From the HSE's GB MCL list page:

"The GB MCL List gives information on the classification and hazard labelling of a substance and is legally binding in Great Britain (England, Scotland and Wales)."

"If you're classifying a substance that appears in the GB MCL List, you must use the mandatory classification and labelling that appears in the list."

Several MCL updates have been made through the HSE's ministerial-decision process. The batch generating most of the "2026 deadline" headlines is a set of GB MCL entries with an entry-into-force date of 15 February 2025 and a compliance date of 15 August 2026. You can see this for yourself in the HSE's published GB MCL spreadsheet, where each substance has its own "Entry into force date" and "Compliance date" columns — this batch shares the 15 February 2025 / 15 August 2026 pair. In practical terms: the revised classifications can be applied voluntarily from 15 February 2025 and become mandatory from 15 August 2026. That roughly 18-month gap is the standard transitional window the HSE allows after a GB MCL decision before the new classifications must appear on labels and safety data sheets.

This deadline only binds you if one of your ingredients is among the substances in that batch. The 15 August 2026 date is not a wholesale rewrite of the CLP regime and does not apply to a product just because it's a candle, wax melt, or reed diffuser — it applies substance by substance. A few of the substances in the 15 August 2026 batch are common in craft formulations — for example benzyl alcohol and hexyl salicylate, both used in fragrance and cosmetic products — so this is worth a genuine check rather than an assumption. The only definitive answer for your product is whether any of your declared ingredients appear on the relevant GB MCL entries.

Practical check for craft sellers: open the current GB MCL list from HSE and search for your fragrance oil supplier names, your essential oils by botanical name, and any other declared ingredients. If none of them appear, the GB MCL updates don't change anything for you. If one of them does appear, check its specified entry-into-force and compliance dates and update your CLP label accordingly.

2. The GB CLP Regime Itself — Stable, with a Reform Consultation Closed in 2025

The HSE ran a public consultation on CLP and chemicals legislative reform from 23 June 2025 to 18 August 2025. The HSE's published consultation response describes the proposed changes — mostly procedural reforms to how MCLs are made, not changes to the core labelling rules sellers see on a label. From the HSE response document:

"HSE will consider how to incorporate the six EU CLP hazard classes into GB CLP. However, HSE notes the addition of new hazard classes in GB CLP could generate burdens for duty holders."

In plain language: HSE is looking at whether to bring the EU's new endocrine-disruptor and persistent-substance hazard classes into GB CLP. It hasn't done so yet. Anything you see described as a "new EU 2026 hazard class" does not currently apply to a candle, wax melt, or reed diffuser you sell in GB.

The HSE response also confirmed how small the divergence is at present:

"Divergence between the GB and EU remains minimal. Divergence between the 206 chemical substances that have received GB MCLs since the UK's EU Exit and the corresponding entries on the EU Harmonised Classification and Labelling List is around 11%."

What's an EU/NI Change — Not a GB Change

These changes you've likely seen in industry news affect EU markets (and Northern Ireland under the Windsor Framework). If you sell only to GB customers, they don't currently apply:

Change	EU/NI	GB
New hazard classes (ED, PBT, vPvB, PMT, vPvM) — Regulation (EU) 2024/2865	Yes	No (HSE considering)
UFI codes on mixtures	Mandatory	Not required
Digital labelling provisions	Phased adoption	Not in GB CLP
EU CLP labelling format updates	Yes	Not yet in GB

If you sell to Northern Ireland (which is "the GB market" geographically but follows EU CLP under the Windsor Framework) or to any EU customer, you need to track the EU rules in addition to GB rules. EU Regulation 2024/2865 introduces the new hazard classes with a phased application timeline that runs through 2026–2028 depending on whether the substance or mixture is new or already on the market. The EU subsequently passed Regulation 2025/2439 which postponed some of the labelling-format and advertising-transition deadlines under 2024/2865 to 1 January 2028. If you sell into the EU or Northern Ireland, check the consolidated EUR-Lex text of both regulations for the specific date that applies to your product type — the phased timeline is detailed enough that secondary sources can be out of date within months.

A Practical Checklist for UK Craft Sellers This Year

Run through these in order. Most makers find nothing changes; some will find one or two ingredients need updated classification.

1. List your raw materials. Pull out the SDS (Safety Data Sheet) from every fragrance oil supplier, essential oil supplier, and any other ingredient you incorporate. You should already have these for CLP classification — if you don't, request them from your supplier.
2. Cross-check against the current GB MCL list. Search the HSE's published spreadsheet for each substance's CAS number or chemical name. Note any matches.
3. For matches, check the specified compliance date. The HSE publishes ministerial decisions confirming the entry-into-force date and any compliance date for each MCL entry — these are the dates that actually bind you.
4. Re-classify if needed. If a substance you use now has a different mandatory classification, update your CLP label before the compliance date.
5. Decide your NI/EU position. If you ship to Northern Ireland or sell into the EU (including via marketplaces that fulfil EU orders), book in time to review EU CLP changes separately. If you sell only to GB customers, this is not your problem.
6. Watch HSE for any decision on the six EU hazard classes. This is where the next material GB-side change is most likely to come from — and it will be signalled well in advance with a consultation if it happens.

Where the "Big 2026 CLP Deadline" Headlines Come From

The mid-2026 date that appears in many industry articles is the 15 August 2026 mandatory-compliance date for the batch of GB MCL entries that entered into force on 15 February 2025. It's a real compliance trigger — but it only matters if your product contains one of those specific substances. It is not a wholesale rewrite of the CLP regime, and most candle, wax melt, and reed diffuser product ranges are unaffected because their fragrance oils are not on that particular MCL update.

If you want a definitive answer on whether your range is affected, the only reliable check is to run step 2 above against the current HSE GB MCL list.

FAQ

What is changing with GB CLP in 2026?

The core GB CLP regime — hazard classes, label elements, supplier duties — is not changing in 2026. The HSE periodically updates the GB Mandatory Classification and Labelling (GB MCL) list, which can change the required classification for specific substances; the most-discussed update is a batch of GB MCL entries that entered into force on 15 February 2025 and becomes mandatory from 15 August 2026. The EU's new hazard classes (endocrine disruptors, persistent substances) have not been adopted in GB CLP.

Do I need a UFI code in 2026 for products I sell in GB?

No. UFI (Unique Formula Identifier) codes are mandatory for EU and Northern Ireland mixtures placed on the market. They are not required in GB. See our UFI codes guide for more.

Do I need to update my CLP labels in 2026?

Only if one of your ingredients is on a GB MCL list entry with a compliance date in 2026 — for example a substance in the batch that entered into force on 15 February 2025 and becomes mandatory from 15 August 2026. A few of these (such as benzyl alcohol and hexyl salicylate) do appear in craft fragrance and cosmetic formulations, but most candle and wax melt fragrance oils are not affected. Run the ingredient cross-check (step 2 in the checklist above) to be sure.

Are endocrine-disrupting fragrance oils now banned in GB?

No. The EU's endocrine-disruptor hazard class introduced by Regulation (EU) 2024/2865 has not been adopted into GB CLP. The HSE has said it will consider incorporating it but no decision has been made.

What about Northern Ireland?

NI sellers (and GB sellers shipping into NI) follow EU CLP under the Windsor Framework, not GB CLP. EU CLP changes — new hazard classes, UFI codes, digital labelling — apply.

Where This Sits in the Wider CLP Picture

For the foundational rules every UK candle, wax melt, or home fragrance seller needs, see our complete UK CLP labels guide. For step-by-step labelling specifically for candle and wax melt makers, the CLP labelling guide for candle and wax melt makers walks through every required element.

Use the free CLP label checker to run your current labels against the standard CLP elements, and the pictogram finder to confirm the right hazard symbols for your ingredient profile.

Sources

• HSE — The GB CLP Regulation
• HSE — The GB Mandatory Classification and Labelling List (GB MCL List)
• HSE — Updating the GB Mandatory Classification and Labelling list (GB MCL List)
• HSE — Publications supporting ministerial decisions on GB MCL (includes the GB MCL spreadsheet with per-substance entry-into-force and compliance dates)
• HSE — Chemicals Legislative Reform Proposals (consultation, June–August 2025)
• HSE — Response report on Chemicals Legislative Reform Proposals (PDF)
• GOV.UK — The Windsor Framework