| 2933 99 80 | Heterocyclic compounds with nitrogen hetero-atom[s] only (excl. those containing an unfused pyrazole, imidazole, pyridine or triazine ring, whether or not hydrogenated, a quinoline or isoquinoline ring-system, not further fused, whether or not hydrogenated, a pyrimidine ring, whether or not hydrogenated, or piperazine ring in the structure, lactams, alprazolam "INN", camazepam "INN", chlordiazepox | Importer | 12 | 2025-08 – 2026-07 |
| 2942 00 00 | Separate chemically defined organic compounds, n.e.s. | ImporterExporter | 12 | 2025-08 – 2026-07 |
| 3822 19 00 | Diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, whether or not put up in the form of kits (excl. for malaria, for Zika and other diseases transmitted by mosquitoes of the genus Aedes, for blood-grouping, and goods of 3006) | Importer | 12 | 2025-08 – 2026-07 |
| 2934 99 90 | Nucleic acids and their salts, whether or not chemically defined; heterocyclic compounds (excl. those with oxygen or nitrogen hetero-atom"s" only, compounds containing in the structure an unfused thiazole ring or a benzothiazole or phenothiazine ring-system or further fused, aminorex "INN", brotizolam "INN", clotiazepam "INN", cloxazolam "INN", dextromoramide "INN", haloxazolam "INN", ketazolam "I | Importer | 11 | 2025-08 – 2026-07 |
| 3002 12 00 | Antisera and other blood fractions | Importer | 11 | 2025-08 – 2026-07 |
| 9012 90 00 | Parts and accessories for electron microscopes, proton microscopes and diffraction apparatus, n.e.s. | ImporterExporter | 11 | 2025-08 – 2026-07 |
| 2933 39 99 | Heterocyclic compounds with nitrogen hetero-atom[s] only, containing an unfused pyridine ring, whether or not hydrogenated, in the structure, n.e.s. | Importer | 10 | 2025-08 – 2026-07 |
| 9027 90 00 | Microtomes; parts and accessories of instruments and apparatus for physical or chemical analysis, instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or the like, instruments and apparatus for measuring or checking quantities of heat, sound or light, and of microtomes, n.e.s. | Importer | 9 | 2025-08 – 2026-07 |
| 2924 21 00 | Ureines and their derivatives; salts thereof | Importer | 6 | 2025-09 – 2026-06 |
| 2931 90 00 | Separate chemically defined organo-inorganic compounds (excl. organo-sulphur, mercury, tetramethyl lead, tetraethyl lead and tributyltin compounds, and organo-phosphorous derivatives) | Importer | 5 | 2025-09 – 2026-04 |
| 3002 59 00 | Cell cultures, whether or not modified (excl. cell therapy products) | Importer | 5 | 2025-09 – 2026-02 |
| 2922 49 85 | Amino-acids and their esters; salts thereof (excl. those containing > one kind of oxygen function, lysine and its esters, and salts thereof, and glutamic acid, anthranilic acid, tilidine "INN" and their salts and beta-alanine) | Importer | 4 | 2025-08 – 2026-06 |
| 2924 29 70 | Cyclic amides, incl. cyclic carbamates, and their derivatives; salts thereof (excl. ureines and their derivatives, salts thereof, 2-acetamidobenzoic acid "N-acetylanthranilic acid" and its salts, ethinamate "INN", alachlor "ISO" and lidocaine "INN") | Importer | 4 | 2025-08 – 2026-07 |
| 2933 19 90 | Heterocyclic compounds with nitrogen hetero-atom[s] only, containing an unfused pyrazole ring, whether or not hydrogenated, in the structure (excl. phenazone "antipyrin" and its derivatives and phenylbutazone "INN") | Importer | 4 | 2025-09 – 2026-04 |
| 2935 90 90 | Sulphonamides (excl. perfluorooctane sulphonamides, 3-{1-[7-"hexadecylsulphonylamino"-1H-indole-3-yl]-3-oxo-1H, 3H-naphtho[1,8-cd]pyran-1-yl}-N,N-dimethyl-1H-indole-7-sulphonamide and metosulam "ISO") | Importer | 4 | 2025-09 – 2026-05 |
| 3822 90 00 | Certified reference materials | Importer | 4 | 2025-11 – 2026-07 |
| 2932 19 00 | Heterocyclic compounds with oxygen hetero-atom[s] only, containing an unfused furan ring, whether or not hydrogenated, in the structure (excl. tetrahydrofuran, 2-furaldehyde "furfuraldehyde", furfuryl alcohol, tetrahydrofurfuryl alcohol and sucralose) | Importer | 3 | 2025-10 – 2026-04 |
| 2933 49 90 | Heterocyclic compounds with nitrogen hetero-atom[s] only, containing in the structure a quinoline or isoquinoline ring-system, whether or not hydrogenated, but not further fused (excl. levorphanol "INN", dextromethorphan "INN", and their salts, halogen derivatives of quinoline, quinolinecarboxylic acid derivatives, and inorganic or organic compounds of mercury) | Importer | 3 | 2025-09 – 2026-05 |
| 3507 90 90 | Enzymes and prepared enzymes, n.e.s. (excl. rennet and concentrates thereof, lipoprotein lipase and Aspergillus alkaline protease) | Importer | 3 | 2025-09 – 2026-06 |
| 3926 90 97 | Articles of plastics and articles of other materials of heading 3901 to 3914, n.e.s. | Importer | 3 | 2025-12 – 2026-06 |
| 29 | HS chapter: HMRC publishes no description for a chapter-level link | Importer | 2 | 2026-03 – 2026-06 |
| 2903 89 70 | Halogenated derivatives of cyclanic, cyclenic or cycloterpenic hydrocarbons (excl. 1,2,3,4,5,6-Hexachlorocyclohexane "HCH [ISO]", lindane [ISO, INN], aldrin [ISO], chlordane [ISO], heptachlor [ISO], mirex [ISO], 1,2-Dibromo-4-[1,2-dibromoethyl]cyclohexane, tetrabromocyclooctanes and hexabromocyclododecanes [HBCDs]) | Importer | 2 | 2026-06 – 2026-07 |
| 2916 20 00 | Cyclanic, cyclenic or cycloterpenic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their halogenated, sulphonated, nitrated or nitrosated derivatives (excl. inorganic or organic compounds of mercury) | Importer | 2 | 2026-04 – 2026-06 |
| 2916 39 90 | Aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their halogenated, sulphonated, nitrated or nitrosated derivatives (excl. benzoic acid, its salts and esters, benzoyl peroxide, benzoyl chloride, binapacryl [ISO], phenylacetic acid, its salts and esters, and inorganic or organic compounds of mercury whether or not chemically defined) | Importer | 2 | 2026-02 – 2026-04 |
| 2918 19 98 | Carboxylic acids with alcohol function but without other oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives (excl. lactic acid, tartaric acid, citric acid, gluconic acid, cholic acid, 3-alpha, 12-alpha-dihydroxy-5-beta-cholan-24-oic acid "deoxycholic acid" and their salts and esters, and 2,2-bis"hydroxymethyl | Importer | 2 | 2025-12 – 2026-02 |
| 2931 49 80 | Separate chemically defined non-halogenated organo-phosphorous derivatives, n.e.s. | Importer | 2 | 2026-02 – 2026-04 |
| 3002 49 00 | Toxins, cultures of micro-organisms and similar products, e.g. plasmodia (excl. yeasts and vaccines) | Importer | 2 | 2025-08 – 2026-02 |
| 3504 00 10 | Concentrated milk proteins with a protein content > 85 % by weight, calculated on the dry matter | Importer | 2 | 2025-11 – 2026-02 |
| 3821 00 00 | Prepared culture media for the development or maintenance of micro-organisms "incl. viruses and the like" or of plant, human or animal cells | Importer | 2 | 2026-01 – 2026-02 |
| 7017 90 00 | Laboratory, hygienic or pharmaceutical glassware, whether or not graduated or calibrated (excl. glass having a linear coefficient of expansion <= 5 x 10 -6 per kelvin within a temperature range of 0 C to 300 C or of fused quartz or other fused silica, containers for the conveyance or packing of goods, measuring, checking or medical instruments and apparatus of chapter 90) | Importer | 2 | 2025-08 – 2026-01 |
| 9027 89 90 | Instruments and apparatus for physical or chemical analysis or for determining surface tension or the like, or for measuring heat or sound, n.e.s. | ImporterExporter | 2 | 2026-04 – 2026-07 |
| 0511 99 85 | Animal products, n.e.s.; dead animals, unfit for human consumption (excl. fish, crustaceans, molluscs and other aquatic invertebrates) | Importer | 1 | 2025-09 – 2025-09 |
| 2843 90 90 | Inorganic or organic compounds of precious metals, whether or not chemically defined (excl. silver and gold) | Importer | 1 | 2026-05 – 2026-05 |
| 2845 90 90 | Isotopes and inorganic or organic compounds of such isotopes, whether or not chemically defined (excl. deuterium, heavy water "deuterium oxide" and other compounds of deuterium, hydrogen and compounds thereof, enriched in deuterium, and mixtures and solutions containing these products, and boron enriched in boron-10 and lithium enriched in lithium-6 and their compounds, and helium-3) | Importer | 1 | 2026-02 – 2026-02 |
| 2906 19 00 | Cyclanic, cyclenic or cycloterpenic alcohols and their halogenated, sulphonated, nitrated or nitrosated derivatives (excl. menthol, cyclohexanol, methylcyclohexanols, dimethylcyclohexanols, sterols and inositols) | Importer | 1 | 2026-06 – 2026-06 |
| 2913 00 00 | Halogenated, sulphonated, nitrated or nitrosated derivatives of cyclic polymers of aldehydes or paraformaldehyde | Importer | 1 | 2026-05 – 2026-05 |
| 2914 79 00 | Halogenated, sulphonated, nitrated or nitrosated derivatives of ketones or quinones (excl. chlordecone "ISO" and inorganic or organic compounds of mercury) | Importer | 1 | 2026-04 – 2026-04 |
| 2916 19 95 | Unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, and their halogenated, sulphonated, nitrated or nitrosated derivatives (excl. acrylic acid and its salts and esters, methacrylic acid and its salts and esters, oleic, linoleic or linolenic acids, their salts and esters, undecenoic acids and their salts and esters, crotonic acid and binapacryl [ISO]) | Importer | 1 | 2025-09 – 2025-09 |
| 2917 20 00 | Cyclanic, cyclenic or cycloterpenic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives | Importer | 1 | 2026-03 – 2026-03 |
| 2918 30 00 | Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their halogenated, sulphonated, nitrated or nitrosated derivatives | Importer | 1 | 2025-09 – 2025-09 |
| 2918 99 90 | Carboxylic acids with additional oxygen function, their anhydrides, halides, peroxides and peroxyacids and their halogenated, sulphonated, nitrated or nitrosated derivatives (excl. only with alcohol, phenol, aldehyde or ketone function, and 2,6-dimethoxybenzoic acid, dicamba [ISO], sodium phenoxyacetate, and 2,4,5-T [ISO] [2,4,5-trichlorophenoxyacetic acid] and its salts and esters) | Importer | 1 | 2026-04 – 2026-04 |
| 2921 19 99 | Acyclic monoamines and their derivatives; salts thereof (excl. methylamine, dimethylamine, trimethylamine, diethylamine, and their salts, 1,1,3,3-tetramethylbutylamine, 2-(N,N-Diethylamino)ethyl chloride hydrochloride, 2-(N,N-diisopropylamino)ethyl chloride hydrochloride and 2-(N,N-dimethylamino)ethyl chloride hydrochloride) | Importer | 1 | 2026-03 – 2026-03 |
| 2921 42 00 | Aniline derivatives and their salts | Importer | 1 | 2026-06 – 2026-06 |
| 2921 49 00 | Aromatic monoamines and derivatives; salts thereof (excl. aniline, toluidines, diphenylamine, 1-naphthylamine "alpha-naphthylamine", 2-naphthylamine "beta-naphthylamine" and their derivatives, and salts thereof, and amfetamine "INN", benzfetamine "INN", dexamfetamine "INN", etilamfetamine "INN", fencamfamine "INN", lefetamine "INN", levamfetamine "INN", mefenorex "INN" and phentermine "INN", and s | Importer | 1 | 2026-02 – 2026-02 |
| 2921 59 90 | Aromatic polyamines and their derivatives; salts thereof (excl. o-phenylenediamine, m-phenylenediamine, p-phenylenediamine or diaminotoluenes and their derivatives, and salts thereof, m-phenylenebis"methylamine", 2,2'-dichloro-4,4'-methylenedianiline, 4,4'-bi-o-toluidine and 1,8-naphthylenediamine) | Importer | 1 | 2025-11 – 2025-11 |
| 2922 19 00 | Amino-alcohols, their ethers and esters; salts thereof (other than those containing > one kind of oxygen function and excl. monoethanolamine, diethanolamine, dextropropoxyphene "INN", their salts, triethanolamine, diethanolammonium perfluorooctane sulphonate, methyldiethanolamine, ethyldiethanolamine and 2-(N,N-Diisopropylamino)ethanol) | Importer | 1 | 2026-03 – 2026-03 |
| 2922 29 00 | Amino-naphthols and other amino-phenols, their ethers and esters; salts thereof (excl. those containing > one kind of oxygen function; aminohydroxynaphthalenesulphonic acids and their salts) | Importer | 1 | 2026-03 – 2026-03 |
| 2922 39 00 | Amino-aldehydes, amino-ketones and amino-quinones; salts thereof (excl. those containing > one kind of oxygen function, and amfepramone "INN", methadone "INN" and normethadone "INN", and salts thereof) | Importer | 1 | 2026-04 – 2026-04 |
| 2922 50 00 | Amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function (excl. amino-alcohols, amino-naphthols and other amino-phenols, their ethers and esters and salts thereof, amino-aldehydes, amino-ketones and amino-quinones, and salts thereof, amino-acids and their esters and salts thereof) | Importer | 1 | 2026-07 – 2026-07 |
| 2924 19 00 | Acyclic amides, incl. acyclic carbamates, and their derivatives, and salts thereof (excl. meprobamate [INN], fluoroacetamide [ISO], monocrotophos [ISO] and phosphamidon [ISO]) | Importer | 1 | 2026-02 – 2026-02 |
| 2930 90 95 | Organo-sulphur compounds (excl. thiocarbamates and dithiocarbamates, thiuram mono-, di- or tetrasulphides, methionine, aldicarb [ISO], captafol [ISO], methamidophos [ISO], cysteine or cystine and their derivatives, thiodiglycol [INN] [bis(2-hydroxyethyl)sulfide], DL-2-hydroxy-4-"methylthio"butyric acid, 2,2'-thiodiethyl bis[3-"3,5-di-tert-butyl-4-hydroxyphenyl"propionate], a mixture of isomers con | Importer | 1 | 2026-04 – 2026-04 |
| 2932 99 00 | Heterocyclic compounds with oxygen hetero-atom[s] only (excl. compounds containing unfused furan ring, whether or not hydrogenated, in the structure, and lactones, isosafrole, 1-[1,3-benzodioxol-5-yl]propan-2-one, piperonal, safrole, tetrahydrocannabinols "all isomers", carbofuran, and inorganic or organic compounds of mercury) | Importer | 1 | 2025-08 – 2025-08 |
| 2933 79 00 | Lactams (excl. 6-hexanelactam "epsilon-caprolactam", clobazam "INN", methyprylon "INN", and inorganic or organic compounds of mercury) | Importer | 1 | 2025-10 – 2025-10 |
| 2933 99 20 | Indole, 3-methylindole "skatole", 6-allyl-6,7-dihydro-5H-dibenz"c,e"azepine "azapetine", phenindamine "INN" and their salts; imipramine hydrochloride "INNM" | Importer | 1 | 2026-02 – 2026-02 |
| 3815 12 00 | Supported catalysts with precious metal or a precious-metal compound as the active substance, n.e.s. | Importer | 1 | 2026-06 – 2026-06 |
| 3920 59 90 | Plates, sheets, foil, film and strip of non-cellular acrylic polymers, not reinforced, coated, laminated or similarly combined with other materials, without backing, unworked or merely surface-worked or merely cut into squares or rectangles (excl. those of poly"methyl methacrylate", self-adhesive products and floor, wall and ceiling coverings of heading 3918, and copolymer of acrylic and methacryl | Importer | 1 | 2026-05 – 2026-05 |
| 3926 10 00 | Office or school supplies, of plastics, n.e.s. | Importer | 1 | 2026-06 – 2026-06 |
| 4901 10 00 | Printed books, brochures and similar printed matter, in single sheets, whether or not folded (excl. periodicals and publications which are essentially devoted to advertising) | Importer | 1 | 2025-09 – 2025-09 |
| 7307 29 80 | Tube or pipe fittings of stainless steel (excl. cast, threaded, butt welding fittings and flanges) | Importer | 1 | 2026-06 – 2026-06 |
| 8405 10 00 | Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers (excl. coke ovens, electrolytic process gas generators and carbide lamps) | Importer | 1 | 2026-05 – 2026-05 |
| 8414 10 25 | Rotary piston vacuum pumps, sliding vane rotary pumps, molecular drag pumps and Roots pumps (excl. pumps used in semiconductor or flat panel display production) | Exporter | 1 | 2026-07 – 2026-07 |
| 8421 91 00 | Parts of centrifuges, incl. centrifugal dryers, n.e.s. | Importer | 1 | 2025-08 – 2025-08 |
| 8471 41 00 | Data-processing machines, automatic, comprising in the same housing at least a central processing unit, and one input unit and one output unit, whether or not combined (excl. portable weighing <= 10 kg and excl. those presented in the form of systems and peripheral units) | Importer | 1 | 2025-11 – 2025-11 |
| 8471 50 00 | Processing units for automatic data-processing machines, whether or not containing in the same housing one or two of the following types of unit: storage units, input units, output units (excl. those of heading 8471.41 or 8471.49 and excl. peripheral units) | Exporter | 1 | 2026-01 – 2026-01 |
| 8504 40 95 | Static converters (excl. accumulator chargers, rectifiers, and inverters) | Importer | 1 | 2026-04 – 2026-04 |
| 8543 90 00 | Parts of electrical machines and apparatus, having individual functions, n.e.s. in chapter 85 | Importer | 1 | 2025-08 – 2025-08 |
| 9018 90 84 | Instruments and appliances used in medical, surgical or veterinary sciences, n.e.s. | Importer | 1 | 2026-04 – 2026-04 |
| 9022 90 20 | Parts and accessories of apparatus based on the use of X-rays | Importer | 1 | 2025-12 – 2025-12 |
| 9023 00 80 | Instruments, apparatus and models designed for demonstrational purposes, e.g. in education or exhibitions, unsuitable for other uses (excl. ground flying trainers of heading 8805, collectors' pieces of heading 9705, antiques of an age > 100 years of heading 9706 and of the type used for teaching physics, chemistry and technical subjects) | Importer | 1 | 2026-01 – 2026-01 |
| 9026 20 80 | Instruments and apparatus for measuring or checking pressure of liquids or gases, non-electronic (excl. spiral or metal diaphragm type pressure gauges, and regulators) | Importer | 1 | 2025-08 – 2025-08 |
| 9027 50 00 | Instruments and apparatus for physical or chemical analysis, using UV, visible or IR optical radiations (excl. spectrometers, spectrophotometers, spectrographs, and gas or smoke analysis apparatus) | Exporter | 1 | 2026-07 – 2026-07 |