If your company places goods on the market in Great Britain, you will need to follow new product marking rules from 1 January 2023.
Businesses are encouraged to be ready for full implementation of the new UK regime as soon as possible. However, to allow businesses time to adjust, CE-marked goods in the scope of this guidance that meet EU requirements (where these match UK requirements) can continue to be placed on the GB market until 31 December 2022. This includes goods which have been assessed by an EU recognised notified body.
See: Placing manufactured goods on the market in Great Britain – GOV.UK (www.gov.uk)