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Your UKCA Marking FAQs, Answered

29th April 2025

Before you can sell or supply certain products in Great Britain, you must certify that they comply with UKCA marking regulations.

Here’s everything you need to know about UKCA marking and how to achieve compliance with it.

What is UKCA marking?

UK Conformity Assessed (UKCA) is the required certification for products, equipment and machinery supplied to GB markets (England, Wales, and Scotland). 

It became operational in January 2021.

What product areas does UKCA marking apply to?

UKCA marking covers a range of product areas, including:

  • Electromagnetic compatibility
  • Machinery
  • Low-voltage electrical equipment
  • Toys
  • Pyrotechnics
  • Recreational craft and personal watercraft
  • Simple pressure vessels
  • Non-automatic weighing instruments
  • Measuring instruments
  • Measuring container bottles
  • Lifts
  • Equipment for potentially explosive atmospheres (UKEX)
  • Radio equipment
  • Pressure equipment
  • Personal protective equipment (PPE)
  • Gas appliances
  • Equipment for use outdoors
  • Ecodesign
  • Aerosols

A few additional products categories are covered by UKCA, but have special rules in place. We recommend consulting the GOV.UK website here for sector-specific guidance.

These include:

  • Medical devices
  • Rail interoperability
  • Construction products
  • Civil explosives
  • Marine equipment
  • Cableways
  • Energy using products
  • Transportable pressure equipment
  • Hazardous substances (RoHS)

Can I still use CE marking in GB markets?

UKCA was originally intended to replace the use of the Conformité Européene (CE) mark entirely. However, Government legislation says that you may continue to use the CE mark in GB markets indefinitely and without penalty for 21 product categories.

These include the 18 regulations that fall under the Department for Business and Trade (DBT), as well as a further three regulations that cover ecodesign, civil explosives and hazardous substances in electrical equipment.

However, this does not apply to regulations for:

  • Medical devices
  • Construction products
  • Cableways
  • Transportable pressure equipment
  • Unmanned aircraft systems
  • Rail products
  • Marine equipment
  • Ecodesign

We advise checking the sector-specific set of regulations that apply to your product.

Want to learn more? Download our free UKCA and CE Marking Guide here. 

Does UKCA marking apply to the EEA market?

No, UKCA marking is not applicable to the European Economic Area (EEA) market.

Conformité Européene (CE) marking is the European Union’s required certification for products supplied to the (EEA. You will need to use CE marking if you’re supplying products to EEA markets. 

If you’re supplying products to both GB and EEA markets, you’ll need to use both UKCA and CE marking.

Does UKCA marking apply to the NI market?

No, UKCA marking is not applicable to the Northern Ireland (NI) market.

Northern Ireland remains aligned with the EU single market. That means you’ll need to use CE marking.

You may need to apply a UKNI mark alongside the CE mark if you’re using a UK body to carry out the mandatory third-party conformity assessment. You should never use the UKNI mark on its own.

Which technical requirements apply to UKCA marking?

The UK introduced designated standards to replace the EU’s harmonised standards.

However, the technical requirements you need to follow for UKCA marking depend on the specific legislations for your product, equipment or machinery. 

Find out more via the GOV.UK site here.

At IES, we can support with testing for the following requirements:

When can I use the UKCA marking? 

The UKCA mark must only be used to show conformity with relevant legislation in GB and, once attached, represents your acceptance of full responsibility for a product’s conformity with requirements in relevant legislation.

As such, you can’t use the mark on products, equipment or machinery if there is no specific legal requirement, and only the manufacturer or an authorised representative may place the mark.

You shouldn’t use any markings, signs or inscriptions on a product that could misrepresent the meaning of the UKCA marking, and the marking needs to be clearly visible, legible and indelible (meaning it can’t be removed once added).

Where should I place the UKCA marking?

In the majority of cases, you should apply the UKCA mark directly onto a product or its packaging.

In some cases (for example, if the product is too small) you may affix the UKCA marking to the data plate, packaging, a label affixed to the product or accompanying documentation.

See our UKCA and CE Marking Guide for more detailed information on how to obtain the UKCA mark

Can my product use more than one marking?

Yes, your product, equipment or machinery may use more than one marking. For example, it may display both the UKCA and the CE marking, where required.

However, it should serve a separate purpose from the UKCA marking, must not create confusion with the UKCA, and must not make the UKCA marking harder to see or read.

What are the rules for using the UKCA image? 

When using the UKCA image for your UKCA mark, the following rules apply:

  • If you enlarge or shrink the size of the mark, each must still be in proportion to the official version below
  • The UKCA mark must be at least 5mm high, unless otherwise specified in relevant legislation
  • The mark can take different forms but must always remain visible and readable

UKCA_Marking_Logo

What documentation do I need for UKCA marking?

For UKCA certification, you’ll need to draw up and keep a technical file or document that demonstrates your product, equipment or machinery complies with GB regulatory compliance requirements.

This should include information such as how the product is designed and manufactured, how it’s been shown to conform to relevant requirements, and finally, a UK Declaration of Conformity.

It’s your responsibility, as the manufacturer, to ensure that all documentation is prepared in or has been translated into English.

What is a declaration of conformity?

For most products, machines and pieces of equipment that use a UKCA mark, you’ll need an accompanying UK Declaration of Conformity before you place them on the GB market. 

This document serves as a formal declaration that you’ve met all applicable requirements and safety directives. It should be available to market surveillance or enforcement authorities, on request. 

A Declaration of Conformity can either be drawn up by the manufacturer or an authorised representative, such as a UK-approved body, when permitted. 

It should include:

  • Information about the manufacturer, product and conformity assessment body:
    • Your name and signature
    • Name and full business address of the manufacturer or an authorised representative
  • Serial number, model or type
  • Details of the body that conducted the conformity assessment procedure (if relevant)
  • The date of the declaration being issued
  • Any supplementary information needed
  • A declaration of product conformity with relevant statutory requirements
  • A statement that you take full responsibility for the compliance of the product
  • Details of the legislation that the product complies with, including all relevant UK legislation and UK-designated standards

Download our UKCA & CE Marking Guide for expert guidance on conformance requirements and checks, technical reporting and our free template for your declaration of conformity.

Does my assembly line need UKCA marking?

Yes. Even if each individual machine already has an existing CE or UKCA mark, you still need to apply UKCA marking, issue a declaration of conformity and produce a technical file for the assembly line as a whole.

In this case, your technical file needs to only contain the design details and drawings of control systems or parts you’ve supplied or modified and the Declarations of Conformity/Incorporation for each item in the assembly line. 

Does modified machinery need a UKCA conformity mark?

In the majority of cases, no. 

However, you will need to carry out a full conformity assessment and get a new UKCA mark if the modification either:

  • Is so extensive that the machine is essentially a completely new item compared with what you started with
  • Affects safety design or system function
  • Introduces significant new hazards that weren’t present in the original design and therefore couldn’t previously be assessed

We should also note that even if you aren’t required to get a new UKCA conformity mark, you still need to make sure the equipment is safe to use and meets PUWER requirements.

Do replacement guards and safety components need UKCA marking?

Safety components need to be UKCA marked and meet the requirements of the conformity assessment, according to the Supply of Machinery (Safety) Regulations

If replacement guards are supplied independently to customers (including manufacturers using them in their own products), then they’re classed as safety components and come under the same regulations. 

The exceptions to this are:

  • Where components form part of a complete machine and the item’s existing UKCA or CE marking already covers them
  • Where components are supplied by the original manufacturer as spare parts

Achieve UKCA certification with total confidence

Looking to get UKCA certified but just don’t know where to start?

Our start-to-finish UKCA marking service covers every step of the compliance process. From assessing and testing high-technology equipment against Electrical Equipment Safety Regulations, Machinery Safety Regulations, and Electromagnetic Compatibility Regulations to providing a Declaration of Conformity.

See our website here to learn more about our UKCA Marking service.

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