time to adjust to the new requirements, the manufacturer will still be able to use the CE marking until 1 January 2023 in most cases. From 2023-01-01, the UKCA marking must be used on the product sold to the Great Britain market. It means that the acceptance date of CE marking extends from 2022-01-01 to 2023-01-01. The Enforced date of UKCA marking extends to 2023-01-01.

The information from office website of UK government:

Please the manufacturer note:
The CE marking is only valid in Great Britain for areas where GB and EU rules remain the same. If the EU changes its rules and you CE mark your product on the basis of those new rules you will not be able to use the CE marking to sell in Great Britain, even before 31 December 2022.
Our expert suggests:
The UKCA marking came into effect on 1 January 2021, please complete the UKCA certification for the product sold to the Great Britain market and use the UKCA marking on the product as soon as possible.
Please see the following website for the related information of Brexit:
https://www.gov.uk/guidance/using-the-ukca-marking
BACL Service:
BACL is a North American safety certification body accredited by American OSHA & Canada SCC, IECEE CB Scheme NCB and CBTL(CB102, TL730), and EU CAB(Conformity Assessment Body) ( Notified Body No.1313). At the same time BACL is authorized and recognized by A2LA, IAS, CNAS, CMA, FDA, ACMA, SAA etc, and sets its safety testing labs in US, South Korea, Taiwan, Shenzhen Futian & Nanshan, Dongguan, Chengdu, Kunshan.
We can provide you with global certification of IT/AV, HOUS, lighting products, power products, electric tools and other products. Certification service includes US (NRTL, FCC, ENERGY STAR, FDA, DOE, CEC) , Canada(SCC, ISED, NRCan), EU(CE), Korea(KC), EU CE NB, IECEE CB Scheme, Japan (MIC), Singapore (IMDA), Hong Kong (OFCA), Taiwan(NCC, BSMI), Egypt (NTRA, GOEIC), Vietnam (MIC), Saudi Arabia (SASO), Philippines (NTC), Thailand (NBTC), Malaysia (SIRIM), India (BIS/WPC/TEC) and other countries’ certification services, ensuring that your products can enter the international market smoothly under increasingly fierce international trade barriers.

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