Rules relating to online activities in European Economic Area (EEA) countries may newly apply to UK online service providers who operate in the EEA from 1 January 2021.
The eCommerce Directive currently allows EEA online service providers to operate in any EEA country, while only following relevant rules in the country in which they are established. This framework will no longer apply to UK providers as the UK will have left the EEA
You should consider whether your services are currently in scope of the Directive, and if so, ensure that you are compliant with relevant requirements in each EEA country you operate in.
For further information please visit the GOV.UK website.