The new UKCA marking (UK Conformity Assessment) is Great Britain’s product marking, which is to be the equivalent of CE marking, but only valid in Great Britain.
The transition period for the UKCA labeling has been extended until 31/12 2024. For products such as medical equipment, building materials, equipment for trains and ships, etc., other rules apply.
Further information can be found here: https://www.gov.uk/guidance/using-the-ukca-marking#when-the-ukca-marking-comes-into-use
The new marking is applicable to most goods already subject to CE marking requirements as well as to some other categories. You can see the product categories here and further down the page.
You only need to use the new UKCA marking before 1 January 2024 if all of the following apply. Your product:
This does not apply to existing stock, for example if your good was fully manufactured, CE marked and ready to place on the market before 1 January 2021. In these cases, your good can still be sold in Great Britain with a CE marking even if covered by a certificate of conformity issued by a UK body before 1 January 2021.
Further information on the use of the UKCA mark can be found at:
Toys
Recreational craft
Simple pressure vessels
Electromagnetic compatibility (EMC)
Non-automatic weighing instruments
Measuring instruments
Lifts
ATEX
Radio equipment
Pressure equipment
Personal protective equipment
Gas appliances
Machinery
Noise emission
ECO design
Aerosols
Low voltage (electrical equipment)
RoHs (Limitation of hazardous substances)
Medical devices
Rail interoperability
Construction products
Civil explosives
Specific guidelines apply to medical devices, rail interoperability, construction products and civil explosives.