Jargon and Terminology CE Marking: Legally all garage doors sold in the UK must have a CE mark or UKCA mark and a certificate of conformity supplied with the door, but since Brexit we are no longer in the European Union so as from 1st January 2023 all Garage door in the UK must be supplied with a UKCA mark. UKCA Marking: Unlike the CE mark which can be ‘Frankensteined’ together using suppliers CE marks for product, you can usually tell this from suppliers who have terms like CE marked and conforms to the appropriate CE standards or Comply with all current legislation.