UKCA Marking Requirements for Products Sold in Great Britain

UKCA marking is the conformity mark required for many products placed on the market in Great Britain. It replaced the CE mark after the UK left the EU, although CE marking remains acceptable in Great Britain until further notice in most cases.

This guide provides practical steps for UK early-stage founders and e-commerce sellers to determine whether your products need UKCA marking, how to create the necessary technical files, and how to self-declare conformity where permitted.

Understanding the Transition from CE to UKCA Marking

When the UK left the European Union, the government introduced the UKCA mark to replace the CE mark for products sold in Great Britain (England, Scotland and Wales). Northern Ireland continues to follow different rules under the Northern Ireland Protocol. The transition period has been extended several times, and at present most products bearing a valid CE mark can still be sold in Great Britain. However, manufacturers must prepare to use UKCA where required because the acceptance of CE marking is not permanent.

The rules are product-specific. Some categories require third-party conformity assessment under the UK regime even if they did not under the EU system. Checking the current status on GOV.UK before importing or manufacturing stock avoids costly delays or product recalls. The requirements apply whether you sell online, through marketplaces or in physical retail.

Which Products Require UKCA Marking

UKCA marking applies to products that previously required CE marking under EU directives now covered by UK regulations. Affected categories include:

• Toys
• Electrical equipment
• Machinery
• Personal protective equipment
• Pressure equipment
• Medical devices
• Construction products
• Radio equipment
• Recreational craft
• Simple pressure vessels

Not every item within these broad categories needs marking. Low-risk products often allow self-declaration. High-risk items usually require involvement of a UK Approved Body. The government provides product-specific guidance on GOV.UK that lists exactly which statutory instruments apply. Always confirm the exact legislation that covers your product rather than relying on general lists.

Self-Declaration of Conformity

Many manufacturers can self-declare that their product meets the relevant essential requirements. This route is available when the applicable UK regulations do not mandate third-party testing. The process involves reviewing the product against the published essential requirements, performing or commissioning the necessary tests, and retaining evidence.

To self-declare:

1. Identify the exact regulations that apply to your product.
2. Compile the technical documentation described below.
3. Complete and sign a declaration of conformity stating that the product satisfies all relevant requirements.
4. Affix the UKCA symbol to the product, packaging or accompanying literature as specified in the rules.

The declaration must be available to market surveillance authorities on request. Keep a copy for at least ten years after the last unit is placed on the market. If you import goods, you may need to take on additional responsibilities as the UK responsible person.

Creating and Maintaining Technical Files

Technical documentation proves that your product complies with the applicable regulations. The exact contents vary by product category but generally include a description of the product, design drawings, test reports, risk assessments and the declaration of conformity. The file must enable someone else to verify compliance without further explanation.

Practical steps to build a usable technical file:

• Start collecting information at the design stage rather than after production begins.
• Record the standards or technical specifications you have applied (harmonised standards give a presumption of conformity).
• Include evidence of any testing, whether performed in-house with calibrated equipment or by an external laboratory.
• Store the file electronically and keep it accessible in the UK for the required retention period.
• Update the file whenever the product design or manufacturing process changes significantly.

For e-commerce sellers who source products from overseas suppliers, request the technical file from the manufacturer and review it carefully. If the supplier cannot provide adequate documentation, you may need to arrange independent testing yourself before affixing the UKCA mark.

Labelling, Packaging and Record-Keeping Requirements

The UKCA mark must be clearly visible, legible and indelible. It is similar in shape to the CE mark but with the letters UKCA instead of CE. Minimum height is usually 5 mm unless a specific regulation states otherwise. If it is not possible to affix the mark to the product itself, it may appear on packaging or in the instructions.

You must also include your name or trademark and a contact address on the product or packaging. For online-only sellers this information must still appear in the documentation that accompanies the goods. Retain records of every batch or serial number, the supplier details if you are not the manufacturer, and copies of all declarations. Market surveillance officers can ask to see this information at any time. Organising these records in a simple spreadsheet or cloud folder from the beginning prevents problems when scaling sales volume.

Common Pitfalls and Practical Tips for Early-Stage Sellers

Many new founders assume that because a supplier provides a CE mark the product is automatically compliant in Great Britain. This is not always true, especially if the product falls into a category where UK Approved Body involvement is now required. Another frequent error is failing to keep technical files up to date when small design changes are made.

Useful checks before placing an order include asking the supplier for their UKCA declaration and supporting test reports, confirming whether the product has been assessed against the current UK regulations rather than only EU ones, and understanding who takes legal responsibility if the product is challenged. For sellers using print-on-demand or dropshipping models, written agreements with suppliers should clearly state responsibility for conformity marking and documentation. Regularly reviewing GOV.UK guidance is necessary because the list of accepted standards and transition deadlines can change.

Next Steps and Where to Find Help

Begin by listing every product you sell or intend to sell and identifying the specific regulations that apply. GOV.UK offers free product-specific checklists and contact details for further advice. Local trading standards services can also answer practical questions. If your business is based in or near West Yorkshire, consider visiting Loomworks in Liversedge for operator mentoring that can help translate these requirements into day-to-day operations.

Compliance is an ongoing responsibility rather than a one-off task. Building good habits early makes scaling an e-commerce business smoother and reduces the risk of enforcement action that could damage your reputation or finances.

Frequently asked questions

Related reading: How VAT and Duties Work When Importing Goods to Sell Online, How to Register a Limited Company at Companies House, What Are Your Annual Companies House Filing Requirements?. Browse all company admin & legal guides or apply to Loomworks.