As well as the actions all travellers need to take, there are extra actions if you’re travelling to the EU for business.

Business travel includes activities such as travelling for meetings and conferences, providing services (even with a charity), and touring art or music.

Entry requirements The country you’re travelling to might have its own entry requirements, or ask you to have certain documents.

Check the entry requirements for the country you’re visiting.

https://www.bloomberg.com/news/articles/2020-12-24/johnson-i...

The deal doesn’t include any mutual recognition of conformity assessment [...] meaning firms will have to pay the regulatory cost of certification twice if they wish to sell their products in both the U.K. and the bloc