Should the UK leave the EU without a deal on 30 March, 2019, the
EURid, the registry manager of .eu domain names, will no longer
allow registration of any new domain names where the
registrant's country code is either Great Britain or
Gibraltar.
If you currently hold any .eu domain names on the basis of
residency, registered office or incorporation in Great Britain or
Gibraltar, you will have two months from 30 March, 2019, to either
update the contact details for your domain names or transfer them
to a registrant from another eligible EU jurisdiction.
If no change is made within this two-month period, the status of
the domain name will be changed to "withdrawn", meaning
that it would no longer support any active services but the record
would remain and the domain name could be reactivated if the
updated eligibility criteria are satisfied. Domain names which are
not reactivated will be revoked on 30 March, 2020.