Export from UK to EU

Is it possible to use the Single Contract of Carriage in DE 2/2 and D/E 5/12 for the carriage of goods from Great Britain to the European Union in the export declaration?

Hi Hermes,
Completion guidance on D.E 2/2 and 5/12 is available on below links.
Group 2: References of Messages, Document, Certificates and Authorisations-
Information-box-44
DE 5/12 Customs Office of Exit (Box 29: office of exit)
Thank you.