The UKCA (UK Conformity Assessed) mark is used to replace the CE marking requirements for all apllicable products - included signs – placed on the UK market. The UKCA mark shows that a product placed on the UK market meets the conformity requirements of that market. The UK conformity assessment procedures and underlying technical regulations (EN standards) that must be used to demonstrate conformity are largely the same as for the award of the CE mark.

Since January 1, 2021, the new UKCA marking has come into force in Great Britain. With a four-year transition period until December 31, 2024, the CE marking for certain products will continue to be recognized in Great Britain. In November 2022 the Department for Business, Energy & Industrial Strategy announced that the deadline for marking UKCA products was extended by a further two years. 

After the transition period, i.e. from January 1st, 2025, only those with the new UKCA mark will be accepted for certain product groups. They can carry both CE and UKCA marking as long as they are fully compliant with both EU and UK regulations.